I noticed after opening the mouth door if you jump straight out there is a fountain ontop of an orb,but you can't fly over to it,the cutscene of when you fall starts and you can't fly over any further.Just pointing that out

I think it's on purpose. Many things related to juice school were... um... changed in 0.0.6 :)

With my exploit it is possible to stay in the air for much longer, so maybe you could reach the fountain, I'm trying myself, but damn is that difficult.

https://itch.io/t/729795/bugs-glitches-etc-volume-2-blah-blah-blah

I found a strat, maybe you could be propulsed at the fountain using Mrs Slitherss laser? I'm going to try that out.