BamBam - focus on these first few days, it's really important not to think long term and just get through it - whatever it takes.
To that end, I would suggest eating at the same time as the boys, and if for a few days you eat ready meals, or something really simple that you can eat - something comforting and that fills you up. I'd also say have at your disposal a stack of treats you can have when that voice starts up. Because it WILL start up. Whether it's a tub of ice cream (with you eating the lot), or sweets, or cakes, or whatever - it doesn't matter because ANYTHING is going to be better than giving in to that voice.
Once the boys are in bed keep those treats to hand if need be. Get ready for bed early, change up that routine as much as possible, have a bath, read, whatever. I was often in bed by 8.30pm and who cares if that's the case.
You're going to need to shake things up a bit to get a different result. Good luck 
Everyone's doing really well, good to read posts from you all and welcome to all the newcomers.
MissHoolie - keep posting, well done for getting through the weekend.