Honestly the big reason for switching perspectives started out as a way to highlight the differences in their mentalities and as a way very clearly show their thoughts as they dealt with their new married life. It was very distinct at the beginning
Now though after two months in close proximity and at least addressing their biggest issue together the thoughts are becoming less distinct. Harry is more calculating and ready to act. Taylor has learned some patience and is practicing restraint because there are small children in the combat zone to think of.
This suggest to me that you might want to reevaluate how and when you're switching POV, to better reflect where you are in the story and the way things have changed.
With that said, I feel like there should still be some pretty large differences between Harry and Taylor's POVs, even if they've started to adopt some of each others world views. Harry has never had to make piece with the fact that his decisions got a little girl kidnapped and tortured or that his closet friends are villains. He's never woken up in the morning with the understanding that in order to get through the day he needs every civilian, and most uniformed personnel, in the tri-state area to be, personally, terrified of him. There should also be some pretty large differences in how they understand the world based on their drastically different personal histories and the capabilities and problems they're used to dealing with. A few months together doesn't really change the fact that Taylor is used to coordinating and fighting teams of parahumans, while Harry is used to working with a small group of wizards against either individuals or magical creatures and objects.
There should also be something of a fundamental difference between their POVs. Harry's is bog standard human while Taylors is, increasingly, not that. I don't see it get played with very often in fanfics, but every human, who isn't Taylor, sees the world from a single perspective, that's centered on a single body, that exists in a single location at a time. By contrast, Taylor sees the world from literally millions of perspectives, at all times, distributed over a several block radius, all with different sensory capabilities and independent movement. And she's not just hopping between different perspectives, like switching to different CCTV feeds. She is always experiencing all of them, with her actual body only existing as one amongst many. That makes her far closer to an eldritch abomination or a deity—omnipresence is kind-of a big thing—than even most other parahumans. Exposure to the wizarding world is only going to make that worse, as she gains access to more and more perspective with senses that are comparable to a human's.
And yeah I had to stop and think a few times this update, though that's mostly down to the shear wall of dialogue. There is so much dialogue. Like yes there are character thoughts but it's Harry and Taylor talking, them talking to Ron and Hermione, Harry talking to the DA, Dumbledore Harry and Taylor getting into a verbal spar for moral superiority and who has the best leadership skills.
Oh my flying fuck this dumbledore debate just will not end. I think Taylor and Harry are winning, that they have made their point and Dumbledore just deflects, denies, decries them and I'm right back where I started only Harry is getting angrier and Taylor is getting more and more coldly furious, and it just wont stop……
I have legitimately been working on this debate on my phone all week, a bit at a time, in the morning before work, while at work because fuck them they took away the Christmas shutdown, and after work before falling asleep just adding, removing, refining. Dumbledore is a pain in the ass to write and I'm trying not to make him a straw man, but it's so hard when his plans and actions are so dumb!
I'm sorry. I know how frustrating that must be, but I can't help but find the image of you sitting there, watching them bicker, like you're some helpless coworker helplessly watching his collegues fall into the same argument for the umpteenth time darkly amusing. To make up for my ammusement, here are four thoughts of varying viability.
To start with, you shouldn't feel overly bound to the exact parameters of Dumbledor's canon plans. A lot of Rowling's writing doesn't stand up to even light scrutiny, so embelishing or adjusting his plans to make them a little bit more sane can often lead to better outcomes than staying 100% faithful to what was written. This is espesially true here, where Taylor's presence should have given him some reasons to adjust what he was doing and, potentially, re-evauluate how he was looking at things, even if he's unwilling to admit it and ultimately doesn't agree with her on most points.
In a similar veign, there's a very human impulse to not admit want to admit we're wrong to people we don't like, espesially when they were instramental in proving us wrong. Doubly so when the person we'd be admiting it to has all the tact of an aluminum bat to the knee. I could very easily see a world where Taylor has caused Dumbledoor to seriously reevaluate what he was going to do and several of his longstanding beliefs. He may have even already changed some of his plans in response to what she's said. It's just that everything about her sets him off and they get into arguments about everything, so he's both unwilling and unable to admit that to her. (Note: This is not to say he agrees with her or that he'd make the changes she wants, which almost makes things worse.)
Beyond adjusting the characters or their plans, there's something to be said for cutting off scenes before they've fully concluded when they start to get tedious. Espesially if that tedium and endless repetition is part of what you're trying to convey. The readers don't get a satisfying conclusion, because there isn't a conclusion to be had. The characters only stopped arguing because they saw the sky getting bright again, but the rest of us called it a night hours ago, when the scene faded to black.
Finally, have you considered doing this from the perspective of a different order member; someone who's not part of the argument? Like I said at the start, there's something darkly amusing about picturing the scene with you watching as a frustrated third party. A large part of that is the way it highlights the inherent absurdity of what's going on and leaning into that can be a good way to center the frustration and pointlessness of these kinds of arguments, which is honestly more important than the merits of either side's points. After all, if the debate was being driven by facts or logic and either side had a clearly persuasive argument, the whole thing wouldn't be spiraling the way it is. Going with a third part might also give us some new insights into how the rest of the Order views Taylor and how she's causing things to change in ways that may not be visible to her. It also gives you an excuse to do fewer POV swaps and to cut things off when you're ready to, not when Taylor and Dumbledor are done fighting. (There's probably something to be made of how similar those two are, despite their very different moral outlooks in the present.)
