Anak 9 bulan kurang susu

Aiyah this is so normal lah, at 9 months babies memang naturally drink less milk once solids kick in, my girl was the same, pengasuh pun panic haha! Best thing is to make sure he's getting enough calories and nutrition from his meals (offer iron-rich foods, fruits, veggies, proteins) and don't stress if milk intake drops, but since you're worried, maybe check with his pediatrician just to confirm he's growing well and getting what he needs.