Is partial buccal fat removal an option? Can a second / revision procedure be done a few years later?

I am planning to do a buccal fat reduction but i dont want to overdo it just partial because i still dont know what will happen to the future. Can you remove partial only then if it affects your face after a few years can you do a revision or a second surgery to remove the rest? And also when you say partial, how many percentage is that? Thank you doctors!