Yes, although BG2s starter dungeon is a whole act instead of a few rooms/battles.

But this mod is starting with the opening area, Waukeen’s Promenade, where the game opens up, (similar to act 1 in BG3).

Also technically BG2 has the tutorial area with Xan that is similar to BG3 in the sense of being a quick few rooms and battles to teach the basics.