On on on on ON ON ON!
there is a reason (actually quite a few) that juices are made in cleanrooms.
one of them is that PG and (to an extent) VG is Hygroscopic - which means it literally attracts water from the surrounding air (along with any micro particles in it - bacteria can degrade juice).
dont risk it for a biscuit - for cake its best to wait
and for anything .. patience and some headroom in the bottle.