I would start giving him smaller portions.  

 Ok. I’ll try that. 

 yeah we had one cat who scarfed their food til they got sick, so my family member portioned it out and spread the timing of the food 

 Oh no!
Unfortunately, my dad has a cat with this problem, too. 
He has hand fed this cat since kittenhood to mitigate the problem 😭 
I think a better solution would be to close the cat in a room with an easy to clean floor until a little while after his meal time. Then even if he throws up, you can clean it and then everyone goes about their day. 
But he’s never tried it my way. 

 I swear he walks away from the hard floor to the carpet just to add salt to the injury. 

 he thinks its a napkin lol 

 Definitely close him in a hard floor room like a bathroom if you can.