I'll start of with saying that this is a good game, and I can imagine that it would have been hard to make. However, I have some constructive feedback:
1) While the game is in line with the theme, you should really incorporate rewinding somehow as a gameplay mechanic itself. This is not to "better align with the theme", as it is already aligned with the theme, but instead to make the game stand out from other games of the same genre. It's a fun game, but it's a generic one.
2) Level design. While some levels being a bit tedious is completely fine, having the only unique thing from level to level be the increase in how tedious they are is extremely repetitive- the levels should make the player think. And I have a theory on why this happened: the level design itself isn't the problem, but the issue I mentioned above is. The only gameplay feature this game has (aside from reaching certain checkpoints to rewind), is blocks that flicker in and out of existence.
However, it is a good game nevertheless! I had fun playing the game :)