What do you consider to be **full time**
What reasons would make you insist on it for some who is -2.5

Sounds like she's fallen victim to the myth that wearing glasses causes
further myopia.

-2.50 is pretty common. As a professional, I seldom require anyone to
wear -2.50 full time. If they don't create a hazard by driving without
correction, there's little reason to insist on full-time wear.

-MT, OD

Of course I want to help but I also think she's being a bit stupid. A couple
of years ago she said her glasses were -2.50 and she just wears them for
driving. I've tried the subtle approach but she seems to have it in her head
that glasses should be worn as little as possible, even if they'd help. The
reason I asked what the pros do is because I wondered if you has some
suggestions for people when you prescribe on how much/when to wear them. Is
there anyone here who's the same prescription?

The same thing you do with people who smoke or use drugs.  Be supportive
but realize that you can't change them.

Ask your friend if they can see a certain.  When they say they can't,
explain that you can, and glasses might help.

Suggest contacts.  Suggest refractive surgery.

What do you do when you get a patient whose in denial about needing glasses?
My friend obviously can barely see past her nose but won't wear them, it just
seems so stupid and I don't know how to help.