spell slot recovery short rest

Each spell slot can only be used once, per long rest, or in the case of Warlocks, once per short rest. Unfortunately, casting spells with higher level spell slots uses the entire slot, you can’t save part of a spell slot for later use.

To recover your Hit Points and Spell Slots in Baldur's Gate 3, you'll need to know how to do a Short and Long Rest.

Short Rest Spell Slots: Pact Magic recharges spell slots quickly.