Milk feedings for 6.5mth baby

Will milk intake reduce at this stage? My son's feeding schedule for recent days is: 7+am: 120ml 10+am: 120ml (Sometimes left half) 12+pm: Fish porridge 2 or 3+pm: 120ml (Can't finish) 6+pm: 120ml (Can't finish) 8pm: Cereal 11pm: 150ml (Dreamfeed) 3.30pm: 150ml (Dreamfeed) Should I be worried? My mil is saying we shld change the formula but I'm comfortable with Nan 2 HA. Baby been drinking Nan 1 HA since he's a newborn.