I agree - Hinata was certainly not the only side character getting spotlight during the war - a lot of them got moments, including Sai, Team 10, Neji, and Tsunade. The only thing Hinata has left to resolve with her character is the romance thread, so of course that's what Kishi is going to usually focus on when she's shown in part 2. I've always thought that NH and SS were about developing the girls' characters rather than developing a romantic relationship between the two, and the focus Hinata's gotten in the war just seems like Kishi tying up loose ends with her character in order to finish her development.
Though of course its just speculation at the moment - this could be building up to NH canon, but at the same time, I find it less likely than the alternative given chapters like 631 and 635.
It could have been, but the problem is that Naruto reaffirmed his feelings for Sakura in 631 and since the manga will soon end, if a pairing had to be canon at the end, it would be the right time for a character to lose his/her feelings for the one he/she loves. Oh wait! Isn’t it what is actually happening with Sakura?
I didn't say we should panic or anything.. 
I'm just saying that Kishi likes to interchange NS moments with NH/SS ones.. he's been doing this for quite a while now, so we should be ready for them in the future.
Hinata hasn't given up on Naruto yet, and SS is not completely dead either, so don't count your chickens before they are hatched.
I really don’t understand why you say this. I read several posts of you where you say that Kishi keeps on giving us NS, NH, SS, NS, etc recently. But I don’t see it like this. I think you may see all this from a pairing perspective. When you say things like this, you make it look like Kishimoto is thinking about the word “pairing” while he’s doing a chapter with a “pairing” moment, you know like he were thinking “Oh, last time I did a NS moment, so now I’m going to do a NH one, and next one have to be a SS one.” In my opinion, there is no rule, if there was a rule like that, it would damage the story more than it already is, plus, we wouldn’t have the right to claim NS has more development than the other 2 anymore, since they would gain as much development.
I was talking about relevant things here, for example: the love-letter shinobi (SS) -> Hinata's speech + handholding (NH) -> girlfriend comment and parallel confirmation (NS) etc...
And if this is an example of what you mean, it convinces me that I disagree with you. The first one is only a Sakura moment to me, there is no interaction with Sasuke, plus it’s a negative moment. It’s a Sakura development moment. Then, the fact that there is a NH moment followed by a NS one is because it follows the storyline. Hinata was on the spotlight at the NH moment time, and then Sakura was healing Naruto when there was the NS moment.
I’m not sure if I explained my opinion well enough, but to be more clear, I just think Kishi didn’t do NS, NH, SS, NS, NH, SS purposely, he didn’t certainly thought about pairing while writing the moments, he was surely thinking about his story and about his character’s development.
Before the war, Kishi never did this thing you say, so I think he’s currently doing it without thinking about it, he does it because he’s trying to close as much character as possible. But the thing is that Hinata and Sakura are centered on the same theme, which is love, so of course it will look like pairing moment, but in fact, while Hinata’s character is being closed with Naruto’s acknowledgment, Sakura’s feelings for Sasuke are beginning to regress while her feelings for Naruto are highlighted, like her worrying constantly.
Hope you understand my point of view on this matter. 
I got you. I think you misunderstood me.
What I'm trying to say is that a moment is when there's reciprocation between two characters at least, and there's a development that already exists between the two that let us know that this a real moment.
Unless it means any interaction between two characters is labeled as a moment in a more general way.
Anyway, I don't think there's anything major for NH anymore except for simple interactions and, if any, Naruto rejecting Hinata at max. SS on the other hand will have some things from Sakura's part.
I agree, if Hinata doesn’t do anything soon, then it’s over for her, she’s meant to be rejected at the end if she doesn’t understand herself that Naruto loves someone else and that it’s not her place. But I more inclined toward a rejection option, because it would be too awkward if Naruto never reacted to her confession until the end. She’s too popular among the fans, even in Japan, for her confession to be ignored when it’s the most important thing she did (for her character, not for the storyline, for the storyline, I know it’s 615).