I do the same thing but from the top part where the fire dog is chilling.

Also this stage is pure aids bro I've been stuck here for too long!

Rather than doing a 3 way character switch, it's easier to get to the top platform on the left by using Robert to wall jump and having the mech just hover to the other platform. 2 way character switch instead of 3 :)

You have to hover before Robert gets to the height of his jump. The timing is pretty tricky.

How do you hover after swapping? I tried multiple times and got nothing.