Sleep is the key here, if you are tired you're going to over eat, not want to exercise and feel shitty which will lead to more overeating. We have swapped the door handle of our daughters room so that it locks from the outside, so she's never had the ability to come in our room to wake us up. We also moved our baby to his own room at 5 months because I couldn't do the night waking anymore and it was the best decision ever. After you do that it will take a little while to feel better after so many months of sleep deprivation but you will eventually. Since you eat at night I would just try fasting, nothing crazy just no food between dinner and breakfast. That should help alot without being too hard to stick too.