I just wanted to say that this doesn't sound like a healthy behavior - restricting calories is a way a lot of people try to cope with trauma and one that I used as well. restricting causes your body to go into starvation mode, where it can be difficult to stop eating and feel out of control - this is called bingeing and can also be a destructive coping mechanism.
My point here is just to let you know that it's okay to overeat sometimes, you are not any less of a person or any less safe based on how much food you eat. I know that it can be very tempting but please do not stop taking the medication without first speaking with a doctor. Ultimately, when your body and mind have healed and are healthy, you will feel so much better than you do now, and the doctors are just trying to find the most effective way to do that. It's okay.
Even if you feel like you can't handle it and need to call your doctor now or in the morning, that's okay, but please know that changing the amount of meds you take without first consulting a doctor is very damaging and addictive.
Eating is okay. Food won't hurt you and you deserve to be healthy. Plus, it's easier to heal your mind when your body is nourished enough that you can think more clearly and get more sleep. I know sometimes these things can be very painful but it won't always be painful. It's going to be okay.