I am a long-time medical grade CBD Oil user. The liquid version that you use a syringe and drop it under your tongue. I am T2D, Rheumatoid and Osteo Arthritis, lower back injury (from 50 yrs ago), and have degenerative discs in my neck. Besides that I am in great shape LOL.
You mention getting sleepy ... that really shouldn't happen with regular CBD Oil without THC. The THC is the psychoactive property that is to be avoided if you want to stay clear headed and awake
Does CBD help? No evidence so far can be found that CBD Oil (with or without THC) affects the glucose levels, but it does have some level of pain relief - especially with Arthritis and other inflammations.
I use both ... CBD Oil with or without THC.
Daytime use CBD Oil without THC. Do you feel an immediate relief from pain? Not likely as it takes time to take effect - up to a couple of hours. You know how well it works when you don't take it
For nighttime I use 1:1 ratio CBD/THC about 2 hours before wanting to go to sleep. I find it really helps and I awake more refreshed. Secret is to find your "sweet spot" for how much to take. I use a 1:1 of about 12-15 mg/L and stay under 1 ml per dose. 1 ml is usually a full load in the provided syringe and you definitely would feel the "dizzy" (high). 4ml is equivalent to 1 gram of Cannabis. The more CBD/THC you take to more psychoactive reaction (high) you will feel. You can't overdose but unless you want to be too dizzy and tired then keep the dose down to about .5 ml. The higher the amount of THC in the mix , the bigger the psychoactive effect. DO NOT drive or operate any equipment while using CBD Oil with THC.
All that said, I wouldn't do without it.
A small word of warning ... the THC will give you the munchies and that could spike your glucose levels.