Try to do the puzzles yourself because it is the only chance chance you have to do it , once you do it , it's gonna be the same for every playthrough.

I will give you clues for every puzzle and if still you don't manage to solve them (same as me)
then watch the video

Clue : blue cubes floating on the water

Video :

Clue 1 : hour between 1 and 2
Clue 2 : triangle inside a triangle (sulfur)

if you have no luck with the clues then here is the video solution