He definitely won't starve himself overnight

DD who is 18mths has started being a fuss pot, and I have started to do this. I am pretty sure you give them 30min max to finish and if still fussing take it away and wait till morning.
I take it away and she has started with the nooo, so I give her one last try and if still no go, then bin it.
She has yoghurt to finish off and doesn't wake in the night hungry.

It's tough love, they get the picture eventually