Girls good evening I have such a question We're 6.5 months old, we sta…

Girls good evening I have such a question We're 6.5 months old, we started to feed him a little bit of solids (different vegetables in turn) He's been spitting up water after breastfeeding for 2-3 days (not much, it's normal) But I'm worried and don't understand why. Is it because of the cottage cheese or not white, but exactly like water? What should I do, please tell me ?