One way to deal with this large pack is by using the tadpole's psychic powers to influence the Gnoll Warlord. You can convince it to fight its kindred, essentially gaining a very powerful ally ...

Flind, the Gnoll Warlord, is one of the first bosses you can defeat in Baldur’s Gate 3. She is the leader of a pack of Gnolls who can usually be found eating flesh inside caves.