My baby vomits about 10% of the milk he drinks. Is this normal?

it could be normal. my baby had the same problem when he was 2 months old too. brought him to the hospital as we were quite worried but turns out to be that he have very bad reflux. keep your baby elevated after feedings. I kept my baby elevated for almost 45 mins after every feedings as his reflux was quite bad.

it is quite common especially if you do breastfeeding. remember to burp your kid more often and avoid rushing to finish the milk. drink in parts with burping sessions in between

Same for my baby, she vomit every time after feeding, sometime even sleep around 1.5 hours , vomit again

same for my baby. it got better around 6th month

it's normal to have mild reflux

Yes normal