Can I have just one breast redone?

Depending upon when the implants were first placed it may be possible to have only one implant redone. Consult with plastic surgeon thst specializes in revision in your area

Although good advice would require much more information, it is generally possible to undergo revision breast surgery on one side only.  This is of course assuming that you are pleased with one side and the other side can be adjusted to match. My best suggestion: select your plastic surgeon carefully. Make sure that he/she has significant experience achieving the types of outcomes you would be pleased with. Then, communicate your goals carefully as well. Best wishes.