Hi mama! Honestly, ang best way to know kung okay lang talaga siya is to check with your pedia sa next visit, they can plot it sa growth chart at makita kung consistent ang gain niya based sa birth weight mo. A few of us moms were worried din about similar concerns, pero turned out normal lang once na-assess ng doctor properly! Don't stress too much though, kasi bawat baby different, especially with formula babies, some gain faster, some slower. Hang in there, first-time mom anxiety is real pero your pedia will give you peace of mind!