It does actually say 'wait'.
I can empathise, this relates back a little to something I did complain about earlier; something the game taught me but then didn't particularly hammer home (I was comparing it to The Witness, that really hashes out a concept in detail to underline it). I think an
occasional issue in Baba is You is it's a little too easy in early stages to hit a solution without having a full understanding of a given mechanic and then get caught out when that more-advanced understanding is required in a later level, but that later level isn't a good environment in which to
learn that more-advanced understanding - in my case it was precise behaviour of SINK that I got hung up on.
But then I'm not necessarily certain that's a problem with the game, I go back and forth on the issue. At what point does it become the player's responsibility to have properly learned a lesson?