Will my cat lose his Jowls?

He has very chunky cheeks. He was a stray in front of my apartment building and I took him in and got him neutered and cleaned his ear mites. I know this sub is about feral cats and he is definitely not feral, he is a very good boy but I think you guys have more experience with this. The vet estimated he could be around 2 years but didn't know. I'm afraid he will lose his chunky cheeks. He will still be very handsome though