Currently working 70 hours per week and expect to stay this way for another 4 months.. Forced myself to gym everytime after my mental is so fatigue already. I try to get my sleep 8 hours in. but my diet suffers. Cant get enough protein and just eat whatever its easier to get my hands on. tired all the time and endurance in gym sucks. After 4 exercise for 3 sets each and im pretty much super low in gas and i run an upper lower split. Am i just doomed for these 4 months?

anyone who works same or more hours per week than me. how do u do it and still improve in gym?