My daughter ended up in hospital at 4 months with terrible infected eczema and she was tested for a few things while she was in (My Dr didnt do anything about her eczema which is why we ended up in this situation)
Anyway, at the time she tested positive for fish,milk,eggs,nuts,wheat and soya so you can imagine the difficulty we had when it came to weaning. (she was put on a hyperallergenic milk and told to eliminate all the above)
If she had milk or nything with dairy in it she would be sick,start coughing,scratching and crying,sleepless nights - it was just horrible. I thought it would never change despite being told it might.
Anyway it got to about 10 months and my paediatrician told me to try and start introducing cows milk. so we started. first in foods and then in her bottle.
She is now 13 months and although she still has problems with her eczema it is under control and much better. She is now drinking full cows milk without a problem!
I dont think anyone really understand how distressing it can be for mothers of babies with these problems. So I just wanted to share my experience with you to give you some hope!