I'm the opposite. I eat say 6 hours before a performance and maybe a super light snack like 2-3 hours before. Just for energy. This ensures there are no burps or any acids affecting my vocal cords. I also have diaphragm control without feeling bloated .

When I sing at an event with food I will not eat unless I am certain I will not be returning to the stage.

Missed a lot of expensive meals but wasn't regretting my choice while performing