Others’ sleep schedules changed
Perhaps your partner is not working from home, or not working right now. So instead of joining you in bed at 10pm, she stays up until 1am watching TV in the other room. It’s a bit too loud. Then, when she does get in bed, that commotion wakes you up. Maybe your partner took a job doing customer service over the phone and has to be up at 6am now, and that wakes you.