Are you keeping them together? I'd seperate them, make sure it's
not too stuffy where you're keeping them. Keeping them warm with
an available very warm basking temp is one thing, but keeping the
whole room that hot without ventilation might be too stuffy.
What substrate are you using? Remember some sulcatas react badly
to timothy hay also. If they were mine I'd keep them on paper
towels right now if I couldn't get the LifeMate kenaf plant
bedding. Anything else is just too dusty and will contribute to
their discomfort right now (aspen,care fresh, sand, shredded
newspaper). Are they drinking out of a bowl (the same bowl?).
My opinion ( unpopular ) is the keep baby sulcatas out of
water during the winter (maybe once every 2 weeks a quick
soak - not if they're sick though), keep water bowls with them
(something my larger sulcata does NOT have in his enclosure during
the winter), air out the house, check your bedding, and seperate
them (reduce your risk of losing both of them), offer them only
horrible foods to have them eating (bananas and squashes)something.
good luck with the vet also, niki