I have the same issue, falling asleep can actually be a trigger and Its like my brain fights it. There are a lot of different things that help, but there's been no magic fix for me. I finally saw a sleep specialist last week and so far I've been falling asleep a little earlier.
I feel like I always find something that works short term but not long term. Right now I'm doing all the homework the specilaist gave me, turning off electronics at night, setting my alarm at the same time everyday, and getting natural sunlight in the morning. She also gave me permission to take a medication for depression earlier in the day since one of its side effects is trouble sleeping.
It was refreshing to hear someone else say that falling asleep is anxiety provoking, it's not something I often tell people about. Have drs been helpful to you at all? Sometimes it feels like those of us with mental illness have to jump through all these hoops and get treated differently and it feels so helpless.
I really hope you get things sorted out, talking to a good dr can be so relieving. Do you have that available to you? You mentioned benzos in your past, my current drs are always informed of my history of opiate abuse so they can take that into account if they have to prescribe me anything . There are options that are non habit forming. Best wishes ~~