How to burp? Help

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I can’t seem to burp him, I can’t do regular over the shoulder since he’s only 10 days and still has cord healing.

I just massage his back for 10 minutes and gently pat, but he’s just sitting there like in a spa. Then I lay him down and here goes hiccups right away ( it’s air build up, I know cause it happening after each feeding).

Any tips or tricks? Please share what you do.

We are eating breast milk through dr brown anti colic preemie bottle.