Mama, please check with your baby's doctor as soon as you can, kahit 3 weeks pa lang, it's best to have them listen to those sounds to make sure everything's okay.
Di ka mag-iisa dito, ang aming friend group ay laging nag-aalala about kung normal ba or hindi ang mga tunog ng newborns, kaya valid ang concern mo. Tungkol sa overfeeding, yan talaga ang tricky part with bottle feeding kaya good na you're thinking about it. The rainy weather na hindi makapasok ang usok ay okay lang actually, sometimes ang fresh air isn't as important as keeping baby calm and fed properly. Best talaga to ask your pedia kung paano mo ma-gauge kung sapat na ba ang laki-laki mo or if those sounds need checking. Kaya mo yan, mama!