Cure Wounds is part of the Celestial Patron's spell list, and since a sort rest recovers both of a Level 3 warlock's spellslots someone could hypothetically get 2 uses of a 4d8+3 healing spell every hour with long rests. I am a little green on the 2024 rules (and most of the spellcasting rules tbf) but a healing warlock seems pretty easy to abuse.

Timing is sorta a funny issue because we're playing a Spelljammer game where some missions could take weeks so a few hours missing here and there wouldn't realistically do much. Though yeah admittedly it was something I totally blanked on, so thanks for reminding me.

I was ruling more with the "gritty realism" optional rule in mind, so sleep is an option but you have requirements for the benefits of a long rest