I have an add-on out there that is a 2-3 session adventure, it's designed for a group of 4, but it doesn't have a ton of encounters, mainly traps riddles and puzzles. The only section that would need to be modified would be the final area's entrance that has 8 baddies, all elemental themed, but they could easily be used by the DM 1 or 2 at a time. Also the adventure is fit to represent a variety of levels, as each trap and Monster has multiple attack macros for different outputs of damage. It's a fun adventure set in a desert setting, and explores the sealed ruins of an ancient wish God, named Na Zelja Boga <a href="https://marketplace.roll20.net/browse/gameaddon/203/temple-of-na-zelja-boga" rel="nofollow">https://marketplace.roll20.net/browse/gameaddon/203/temple-of-na-zelja-boga</a>