Holy hell, OP, are you serious? I didn't expect paying when I had to go totally cow's milk protein, soy and nut free when my DS3 was 8wo and bf.
And I'm skint. I already had one DC on a gluten free diet, and I don't get anything for him on prescription either.
I bf DS3 till he was 12mo, and then yes, he is prescribed 6 x 400g tins of Nutramigen 2 each month (I have to pay for the other 4, at a cost of over £15 a tin).
Still doesn't occur to me to moan that I saved the NHS money - I couldn't give a crap about that, I bf him because it was the safest EASIEST thing to do.
I had no choice but to stop bf at 12mo, as I had to go back onto meds that are incompatible with bf.
You have NO idea how much easier it is to follow a dairy free diet as an adult bf than as a toddler.
I now have to have an almost dairy free HOUSE, and I can't even take my DS3 to toddler groups as he is anaphylactic to even secondary contact with CMP.
So stop moaning, enjoy your baby, and stop thinking about £££ signs and tell yourself that you are doing the best thing for your BABY.