I have since cut out diary from his diet and the runny nappies/rash have improved but he is still sick quite frequently and has TERRIBLE bottom wind which prevents him from sleeping alot of the time.I am breast feeding him so eating no dairy has been quite a challenge but I wonder if he is also intolerant to soya.Had almost identical problem to you with my son when he was 8 weeks old.
His nappies are always green, not the yellow mustard colour they tell you babies nappies should be!
We have been given Nutramigen from the dietician as a fall back feed if I need it but it smells disgusting and he will not drink it unless I add some of my breast milk! Does the waitrose 'free from' range cost a fortune??? My LO was eventually diagnosed as dairy intolerant at 6 months after months of screaming, pain, not being able to sleep, blood in poo etc.
However, we did find Doves Farm apple and sultana flapjack and Doves Farm chocolate waffles which I'm fairly sure are soya free too (we get them from waitrose or sainsburys).
I don't know how severe your problem with soya is, but we found Ellie could cope with Soya Lecithin now and then, which is very helpful for biscuits and chocolates.
She will go into hospital at a year old to have 'milk and soya challenges' and I guess that will be done periodically til we know if she has outgrown it....
It worries me how she'll cope as she gets older and more aware - no yoghurts, cheese etc etc....birthday parties etc will be a nightmare!!
I did (and still do for the dairy free) a lot of cooking - pure sunflower spread makes v.
good fairy cakes and I have a great choc brownie recipe that works with that too.
He is now 13 months old and i breastfed him up until the day after his first birthday so was dairy soya free for 9 months.