The game was okay, it just felt unpolished.
The jumping and movement feel very buggy at times, which isn't great if the majority of the gameplay is about movement puzzles.
Sometimes also things got cut off from the screen. In the beginning, you can't really see the next platform, and in the section where the purple stuff chases you, you often can't see what's going on if you are too fast.
The scrolling thing was simply too hard for me. I felt like I would have to memorize how to get through that. And the terribly slow movement of the old man made it so cumbersome to try again.
The concept isn't bad, but I think there was a lot more you could have done with the idea. Maybe some actions of the younger self could change things for the older self?