Once you finish a THC break (everyone has name for it), make sure you research what an appropriate THC dose for you actually is, plenty info on the net. Then just find THC % per gram of what you use, then apply that to your vape. So lets say 5mcg is your dose, there is 20% in XYZ Strain per gm, so thats 20mcg per 100grams, which means your dose is 25mcg is your dose.

Only using the above as an example. But so many people overdose THC and either cut back immediate or they say "weed is not for me, it makes me paranoid" etc, which is a real shame and shows the ignorance of the everyday folk, no fault of their own, because the medication is only just coming out of being prejudiced for illogical reasons in the last 100yrs or more.

Hope that helps. I feel your pain, Ive been in your situation for a very long time :-(