guys help i’m stuck

so i just talked to solanum after having to fiddle around with the quantum moon tower for like an hour and i was lowkey expecting the game to end or some big conclusion, but we just chatted for a bit, he was chill asf but i tried every combination with his dialogue and then just dipped and then the sun blew up and i was back to square 1. I thought the quantum moon was kind of the whole thing but now i have no idea, i’ve explored most of the game already so wtf do i do now??? help me pls