Sorry to be the one to say this but I think you are setting yourself up for trouble.What if you become Lactose intolerant and cant eat anything at all?
Milk alone is just going right through you and your stomach as small as it is,is getting used to being empty.Hence not feeling hungry.Your team would not advocate being without proper food.You will be missing on vital nutrients ie protien,carbs,minerals and vitamins etc.We only absorb about 50% of our intake so you are running on next to nothing.You will loose bone density,and have muscle wastage.in fact a lot of your weight loss will be muscle wastage.Your body wont function properly.Please contact your team and explain the problems you are having.We need a balanced diet.Your gut also needs solids to function properly or they will give you problems too.I hope I havent offended you,Im just concerned.Maz x