You regain all expended Spell Slots when you finish a Long Rest. You prepare the list of druid Spells that are available for you to cast, choosing from the druid spell list. When you do so, choose a number of druid Spells equal to your Wisdom modifier + your druid level (minimum of one spell).

Do you regain spell slots after a short rest?

You regain all expended Spell Slots if you finish a Short or Long Rest. A short rest is a downtime period, at least 1 hour long, during which a character does nothing more strenuous than drinking, eating, studying, and adapting to wounds. Then they take a short break to recoup the helpful spell slot.

How do you get spell slots back?

You regain all expended spell slots when you finish a long rest. You prepare the list of cleric spells that are available for you to cast, choosing from the cleric spell list. When you do so, choose a number of cleric spells equal to your Wisdom modifier + your cleric level (minimum of one spell).