My girl was also like that for the first 2 months despite burping her religiously and feeding correctly. Eventually, she rarely regurgitates even when she hasn’t burped. If it’s gas, you can try Yu Yee oil. I did and it works 😊
Hi... you might find this article informative https://sg.theasianparent.com/baby-burping-tricks
Rub his tummy on clock wise direction. Or if you trust ru yee you can apply abit...