u/Affectionate_Dot34

I used Philips avent flow 2 for my 8 weeks old, however he gets really fussy while drinking from it. What should I do? Should I get a new flow nipple ot try a different bottle? Which nipple size should I use? I am very confused!! I bought a local plastic feeding bottle in emergency which had a pretty fast flow, my baby prefers this bottle over Phillips one. While drinking from it, it forms so many bubbles inside the bottle!! I am very confused