recommended is 6 mos to introduce water. pero alam ko sa formula fed, may certain amount of water na inaallow. best if you can check with your pedia po as for milk build up sa tongue, natry nyo na po linisan using gauze and clean water?
Not recommended ang water kay baby below 6mos kasi may water intoxication po na tinatawag, try nio po clean ng wet gauze ung toungue ni baby,