I hope you are feeling better and stronger today. X
Now, about those priorities. Perhaps it would be worth seeing the free time alone with your children your partner gifts you with in his drinking sprees as a good thing. Right now, your children are probably even more upset and confused with than you because the people they depend on. for everything, well, one is drunk and unavailable and the other is depressed and unavailable. They need you and the time alone with you as the healthier adult.
So, how about sitting down with them and making a list of fun activities that you can do with them when hubby is out drinking? Things like baking, finger paints, watching favourite movies, going for a bike ride, playing games, paying in the garden, going to the park etc. Helping you get through the difficult times and giving them positive memories with their mother.
That could be a simple way of helping the change of priorities. X