This sounds like a good idea.
Also, if steroids help, you can mail-order them from Wedgewood Pharmacy - some are available in Gourmeds treats, Tiny Tabs, or even transdermal (ear gel in a pen). I give Smudge the latter, and it's really not expensive at all, even with postage.
The only other thing I can think of is kitten food to keep their weight up. Good luck, and please keep us posted!
Love, Columbine
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