Sympathy. My DD has just, at almost 3, got over the worst of her dairy and soya allergy. She's still breast fed as it seemed the easiest solution. (Well, that and the idea she has that it's the single most important thing in the universe and she's not going to stop, ever, apparently.)
I found that if I had dairy, she would react pretty promptly, and when I totally cut it out (as I had to for a while, though I slowly added back cheese and so on into my diet as she improved) she improved quite quickly too.
We were given neocate by the hospital dietician as they were unfamiliar with breastfeeding toddlers and were unconvinced of it's nutritional value. But it smells and tastes foul and she wouldn't go near it, no matter how I disguised it.
GPs have drug prescribing budgets and the cost of neocate swiftly eats into it; a lot are restricted by local prescribing guidelines too. Round here a consultant paediatrician with an interest in allergy has to ok the prescription of neocate.
Best of luck with it all. In a few months once you're into weaning there are all kinds of good dairy free products about - it's amazing how fast you become expert about what has what in it.