It's very easy to change your seller central account owner from your personal name to your business's name at any time.
In Seller Central go to Settings (top right corner) > Account Info > Legal Entity > Update Tax Information
**Before making changes like this to your seller account, we suggest you open a case with seller support to let them know you are making a change. That way, if the Amazon bots flag your account change, you will already have a record of communicating with Amazon.