Food aggression – best way to resolve it?

I've had my puppy just over a week, feeding has been a bit of a pain with him clawing at me then inhaling food in 30 seconds. I've bought a few slow feeders and rotate them throughout the day, the last 2/3 days have been better now he's starting to understand he has to sit & wait then eat

Tonight however after he'd walked away I went to pick up his bowl to which he came running back over then growled and snapped his teeth at me twice

I have a small child so we have been hand feeding, stroking through feeds etc to prevent this. Lots of conflicting advice online on how to handle this so I was hoping for peoples experience & opinions to stop this before it becomes a problem

Thanks!