Hi BL,
Yeah that's the idea - wear the +2 glasses over your usual ones and
1. You'll look daft BUT:
2. you'll be helping pull your eyesight up.
Don't forget that opticians prescribe lenses that give you 6/5 vision in each eye which is too strong - this leads to your poor old eyes adjusting to the new prescription and being driven even more myopic, (especially true in children who's eyes are still growing).
This over correction is a vicious circle leading to worse eyesight for you but more profit for the opthalmic mafia when they dish out more expensive glasses!!
Cheers
Magoo