I don't know what you were prescribed, but for me, smoking and vaping doesn't have the same effect. Edibles, and in particular I take ones that use Indica strains with some CBD, do the magic for me.

And it took me a bit of experimentation to figure out the correct dosage in milligrams for my body. An interesting thing about cannabis is that you don't really risk a ton from over-indulging besides maybe just having a bad time with some uncomfortable mental state (paranoia and dizziness.) I'm a fairly small person and 20mg is what does it for me. But you might try 10mg or 30mg. I know people that take 50mg, or have (perhaps irresponsibly) taken 100mg. It's mostly up to you to figure out your dosage, and in most cases I'd say listening to your doctor for dose is the right call; for this I'd say maybe take it a bit more as a suggestion than a rule, until you find a sweet spot. If you find a sweet spot. Wish you the best!