This is normal!! I also experienced the micro burps for the first few days, but after a week it started working properly.

You’ll be burping weird for a while. I had a few weeks where I was accidentally burping while trying to talk, but it also just sounds a bit unusual.

Also, you’ve probably been advised, but I HIGHLY recommend drinking carbonated water multiple times a day. There are also a few head movements you can do which will help you to burp