Lesser milk intake

Hi Mummies, do you experience your baby have lesser intake of milk when reaches 3 month onwards? My baby girl started to have lesser milk intake. Sometime she dun even finish her milk if i will to bottle feed her. I switch routine to latch her during day time (whenever she need) and bottle feed her once or twice per day. PD seen her during her 3rd month injection and certify her healthy and said they called it as cheeky baby. Told me can start to give soft food 4 month onwards..