i would say go to bed a little bit earlier so you can wake up a little earlier. it doesn't have to be like 2 hours earlier just make sure you have had enough time to sleep so you dont feel so exhausted when you wake up and aren’t able to get our of bed.
I would try to do something that could count as exercise in my everyday life. Instead of taking the elevator, take the stairs. That is a form of exercise that you could do. You could also walk to work or take the long way when walking around your job. I don't know. Find something you can do in your everyday life.
I think that sometimes is better to set aside your job when you cant anymore with it and try to relax a bit with workout. Lets say you usually work until 6pm but as your job is demanding you need to say 3 out of 5 days until 8 i would reduce half an hour on those days to even though you may not finish give yourself a reward with a good workout you can always keep working when you are tired and your mind rested!
I think waking up a hour or more before your job gives you time to squeeze in a short workout. You don't need to work out every single day but choose a couple of day to do at least one workout. 😊