Milk intake

Hi Mummies, Is it okay if my 6 month is drinking 150ml instead of 180ml? Tried giving him 180 but couldn’t finish it. And how much does he need to drink per day if he is drinking 150ml and recently i have started giving him solid foods. I am worry as day by day his milk intake decreases and it’s only the first week of BLW.. TIA. #firstbaby #firs1stimemom #pleasehelp