Keeping breastmilk supply up...

Katt
I have 13 month old twins and a c section + tubal scheduled for the 22nd. I honestly don't get the chance to eat enough just for myself since I've got 2 little ones that are either always into something they shouldn't be or taking all my food after they've just already ate. I want to be able to breastfeed, even if just for a little while, but I feel like I'm gonna have a hell of a time keeping a good enough supply going to do it at all. Any tips for my situation?