Hi there,
You could look for some sort of 'paddock paradise' livery where they live on hay only more or less?
I've found Thunderbrook Feeds Dr Debbie Carley really helpful for allergy stuff and all sorts of herbs and they are in the UK, and always happy to give advice
I cannot stress enough to read the university of minnesota guidelines, in particular the 'return to work' part. Glad the pony can mooch around now as there would be absolutely no way that the CK would reduce if kept on box rest. (mine has heterozygous ppsm 1 and if is in a stable not moving for...