Pedialyte is great for keeping babies
hydrated although he doesn't sound to well
right now.
Poor lil' honeybunkin.
Seriously though .B if he has always
napped on his front and you check him
regular, and there is nothing (i mean
nothing) to block his airways and your
mattress is breathable - i'd leave him
be.
I hate this idea of babies sleeping on
their backs because they run such a risk
of choking on spit up or vomit. - just my
personal opinion. Do what works for you
and our baby and just exercise common
sense (of which I know you have plenty).
Hope he feels better soon.