I think you have made a giant step in looking objectively at what you are doing and what is causing the problem right now (extreme stress!). Even though you haven't conquered your old habits 100%, you are fighting them, right down to posting here and looking for support.

You have some very unfair pressures on you right now and it sounds like everyone will be looking to YOU for support and strength. Think about eating in a way that will make you strong. Eat protein and plenty of veggies so you will feel healthy and have good digestion during this time of stress for everyone. When you are feeling good cook up a bunch of chicken breasts or make a meat loaf so you have something to reach for later.

Let us know how things are going.