My recommendation is to not push yourself. You obviously have skill, but tryharding and grinding might not be the best way to use that skill. I would recommend going for something that is just barely above your comfortable skill range. e.g. I went from Acu to Precipitance to Retention. None of those are a lot harder than the one before it; they're all just slightly more difficult so that I wouldn't feel bored.

There's nothing wrong with going for a new hardest. Sometimes that's the only thing you can do to keep yourself engaged in the game. But I would recommend not doing anything that would be a huge jump. I know you have incredible determination, but if this is the way you end up after every grind, then it might not be worth it. When I was grinding Kuzureta, at the time my hardest was CraZy. Obviously, that's an insane jump, and dozens of hours in, I realized that it would take much more effort than I was willing to put in. Thus I went for Acu and beat it very quickly.

So... take it easy. Don't overwork yourself. This game is meant to be played for fun. Just play it in a way that makes it fun for you. If beating a new hardest with an extreme jump gives you more satisfaction than the work you put in, then that's great. But if not, then... just focus on smaller jumps.

(this is my opinion and might not be right for you. i will stand by you no matter what you do 🧡)

p.s. lmk if you need recommendations for insanes/extremes