As of the next session I would like to introduce the following optional healing rules from the Dungeon Master’s Guide:
Healer’s Kit Dependency
A character can’t spend any Hit Dice after finishing a short rest until someone expends one use of a healer’s kit to bandage and treat the character’s wounds.
Slow Natural Healing
Characters don’t regain hit points at the end of a long rest. Instead, a character can spend Hit Dice to heal at the end of a long rest, just as with a short rest.
In addition to any Hit Dice the characters may have spent at the end of a long rest, they regain 1 + Constitution modifier in hit points, with a minimum of 1.