I had one boob a cup size bigger and had 325cc Mod plus on both and they’re pretty much even. Sometimes if u put in two different sizes it can make it more obvious believe it or not. It’s only in severe cases of assemetry that they put in two different sizes and even then may change their minds.
On my first consultation i was told I’d have two different sizes I saw my surgeon three times before my op and after the second consult she said it was fine to have same size in both so try not to stress over it they know what they’re doing.