You should get some solid professional advice on this but there are two considerations:

1. You need to self-certify every time you fly, even only exercising sport pilot privileges, that you do not have a medical condition that makes it unsafe for you to fly.

2. You cannot have been denied a medical or had one suspended or revoked. See 61.303(b). There is no need for you to surrender your medical certificate and every reason in the world not to.