Why don't you give your kid milk every hour...literally. That was what I did together with Heraclene and somehow it helped, well somehow. She doesn't have to take it, but offer it to him/her every hour. Patience and tiyaga important din yun.
Try all the options if necessary, i.e. try cold milk, warm milk, etc.
Try different kinds of milk brands, also, your kid might have a favorite bottle and teat.
Also when feeding them, you have to show that you're happy with what you're doing. I for one, sometimes, I get pissed if my kid does not want to eat, and the more I get pissed, the more they don't want to eat, so I guess it's important that we show them love and patience when feeding them.

In any case, good luck and I hope this helps
