Quality of work dropping due to over-staffing

Hey guys, title is pretty explanatory.

My quality of work has significantly gone down in the past 2 months because of how many things I'm staffed on. Over the past year and a half, I've been on average staffed on 2 live deals (usually 1 has been more active and the other in it's tail-end), permutation of 2-3 bakeoff/client facing decks. Now this may or may not sound like much depending on how your bank or team tackles these projects, but for me and my associates, we were clocking in 80 - 90 hour weeks on average with some weekends off in the middle.

I've been caught the eyes of my MDs due to my quality of work & because I ask a ton of questions. They've requested to have me staffed on things that come through due to this. For the past 2 months, I've been clocking in 8AMs - 3-4AMs every day. Even on Saturdays im setting myself up for the Sunday and coming week. I'm on 5 pitches, 3 deals and working across a bunch of teams on a new product our groups will be able to leverage. I have a hard time pushing back because I feel it will affect my reputation as a go-getter but agree that this is beyond unhealthy. I had a talk with my staffer and let him know my quality of work is diminishing & he said he will be more selective with what he hands to me but that hasn't happened. Anyone been in a similar boat?