[Subby]

Definitely he should try a few shorter fasts first to see how he goes. It should be doable and safe if he is prepared to keep with it. On the other hand, he might find that fasting a long time is a problem, I find that I sadly get shaky and feel ill in my stomach quite quickly when fasting. I do not know if this is related to diabetes or insulin somehow.

As far as what input he can have, I think that having only the same options as non diabetics may be unfair. Up to me, he would be allowed the corrective foods he is comfortable with if required, so that he can successfully complete the fast like everyone else. That to me may put it on an equal grounding and be more reassuring for all involved. If he deals with juice and rice comfortably as corrective/predictable foods, then this may be a moot point. I suppose my point is I'd hope there was consideration for his condition and simultaneously no fuss was made of it, partly up to the school/teachers I guess.