Who said 30 seconds? Yep, that's right.
The bowl was stuck tight, tight, tight to the tray, there was no way it was shifting… until I turned around and Babybear frisbeed her spaghetti bolognese across the room. I've tried it again a couple of times with different plates and things and she overwhelms them all with her Hulk-like strength.
It cost a fiver… available from all good supermarkets selling baby shite you don't need that doesn't work.