The idea is you basically just touch their lips with a dab at first, so if there is any sort of reaction it isn’t life threatening. Then you increase a bit, etc.

Depending on how the hospital operates and whether there is a reason to be concerned some pediatric units will allow you to do the introduction on-unit. I'm sure things can change day to day, but that's the case for the hospital my wife works at, and is what we were advised to do when we're going to attempt some food re-introductions in a few months for our child.

Do you give them a heads up first or just say yolo and hope everyone survives?