This is part 22 in my 100% walkthrough of Super Mario Galaxy on the Switch. This video shows how to get Secret Stars in The Bell on the Big Tree in Gold Leaf Galaxy, The Flipswitch Chain in Toy Time Galaxy, and The Fate of the Universe in Bowser's Galaxy Reactor.
I played on Super Mario 3D All Stars.
I do not own the rights to this game, but I do add my own editing and creative input. All gameplay footage is my own.