my son was reluctant to drink milk around 4mo and then he sprouted his 1st 2 teeth during 4mth 3wks. as he has no interest on milk, i started baby cereal/apple mash during that time, though nurses suggest to start semi-solid food in 6mo.
and then my son quitted milk (not for a single oz!!!!) when he's 17-18mo and then re-took it again after 1 month. BB is so unexplanable ah!