Does the Catnap spell affect people that are already unconscious?
An example:
The trusty fighter fights and takes damage, and is reduced to 0 hitpoints. The wizard kills the bad guy(s), and stabilizes the fighter.
Now the wizard looks over his trusty fighter and casts the spell catnap (Xanathar's Guide to Everything, p. 151), desiring for the fighter to wake up in 10 minutes after getting the full effect of a short rest, including a short rest's worth of healing, rather than after 1d4 hours with 1 hitpoint.
Does this work the way the wizard hopes? Or have I misread something?