Apple Watch Ultra 2 stops charging at 80

I have a problem with my Apple Watch Ultra two that’s driving me insane. I like to charge my watch at night because I use the sleep tracking and if I didn’t, I literally wouldn’t have enough time to top it off in the morning. The problems I’m having recently is when I go to charge my watch, it stops at %80. I do not have optimizing charging on and it’s always been turned off since I got the watch. I understand the Apple Watch tries to use my behaviors with the watch to judge on when it should charge but I’m highly unpredictable. I don’t charge my watch at the same time everyday or wear it at the same time. On the battery screen, there used to be a “charge to full now” button and that no longer pops up for me. I tried resetting it and nothing is working. All I want is to put my watch on the charger and trust that it’ll charge to full when I come to check on it and an hour. This is starting to become a big inconvenience. Do anyone have any similar issues or how to fix this?