Help with Burping Technique

I am trying to get my technique down. I can both gulp and inhale. The problem is I can’t release the burp when I want. No matter what my burps get stuck and I have to wait till they want to come up. Sometimes they will release in parts too. I notice talented belchers can rip them right after inhaling. Does anyone have any tips in order to get them back out? I don’t see this part talked about much. I want to get as good as Mary Rose Love.