RPGMemes

A willing creature you touch shape-shifts, along with everything it’s wearing and carrying, into a misty cloud for the duration.

While in this form, the target [...] can enter and occupy the space of another creature. [...] can pass through small holes, narrow openings, and even mere cracks, though it treats liquids as though they were solid surfaces.

This is one of the few transmutation and movement spells that don't require you to end your turn or movement on an unoccupied 5ft square.

This should work. Nice! 😆