By the end of "Ant-Man and the Wasp", Scott, Hank, Hope, and Janet plan to harvest quantum energy to help Ava remain stable. Unfortunately while Scott is in the quantum realm doing this, he ended up trapped in there while the other three disintegrate offscreen, leaving him no other way to escape.
Five years later in Endgame, the van is placed somewhere else and a rat frees Scott from the quantum realm.
But I was just wondering, what did Scott do when he was trapped in the quantum realm despite the long time skip?
Please comment below.