Thanks to all whos replied and on the other thread as well - where I messed up lol
Its put my mind at rest that this is quite a common thing and its not being caused from the milk. Will try the water at regular intervals (even tho he pulls some funny faces when I try to give him it) and the cycling...interesting!
Once again thanks, and its nice to know that I can come back to this place with any other problems...keep up the good work!