I think my nipples have stayed roughly the same size , if they have got bigger it is only in proportion to the size of my boobs now so I really wouldn’t worry about them becoming too big. I would say if your nipples are moderately small to begin with they will be small afterwards. If they were big to begin with they will be big afterwards. I really don’t think they change in any considerable way. If you are unhappy with your nipples to begin with speak with your surgeon as reconstructive nipple surgery is possible!
I have before and after photos if you would like to see the difference in my nipples pre and post, I got 485 implants so slightly smaller than you.
Hope this helps !
Xx