Getting irritable when intermittent fasting

I want to do intermittent fasting but I’m nervous about doing it while I’m at home with my children as when I’ve done it previously I have always been much more irritable with the children during and after fasting. In fact, in the past I have resolved only to do it when I was at work as I thought that it wasn’t fair on the kids.

How can I make this work when I need to look after the children?