That’s good news!! And not to worry, in my scouring of the Net I found MANY references as to how common “diarrhea” is in horses, especially foals.
And SOFT stools is not diarrhea, as we have established :yes:. Again, in foal or mature horse I would rather have the stools abit soft that too hard & dry.
Of course you should monitor it, but I think he will be just fine…and you won’t even have to wait till weaning…I’m sure as he gets older and starts eating more forage things will probably smooth our even more. And, as others have mentioned, along around month 3-4, the mare’s milk will lose much of it’s richness and the problem will probably clear up.
If he is bright-eyed, playful and energetic, he is fine. Just keep your eyes out that you don’t OVER DO all the stuff you are giving him…every few weeks I would (slowly, over the course of several days) withdraw all the lactaid & such and see what happens. Because (again) not pooping is just as dangerous as pooping soft stools…in fact, I think it’s MORE dangerous.
Good luck – he sounds adorable – can you post the pic somewhere else so we can see it?
And I don’t think I ever asked – what is his breeding and what are your future plans for him?