All good suggestions.
As an ergonomist who rides, I would look at posture, force, duration, vibration, contact pressure, cold, & repetition. The first two (posture and force) are not just dynamic but also static holds.
For force and posture, don't limit your view just to the fingers, but from the neck/thoracic area to the fingers.
Search Dave Moss and ergonomics. He has some good videos.
Post a pic of yourself, with helmet on for privacy, in your riding whole body positions(s) both side, front and back views. Get close-up video you gripping the bars from side and top down views. Same for brakes, clutch and throttle operation. Leave gloves off so we can view the wrist angles and fingers operation/contact with levers.
Some other questions regarding your riding behavior:
What type of bike? Is this a new bike or new riding positions or new accessory?
What else changed around or before the symptoms became persistent? For example, are your working more hrs. at PC, or did your start something new outside of motorcycling?
ON average, how many times per week do you ride and for how long for each of those periods? What is the upper end and how frequent is that?
How many breaks do you take in a ride and how long do they last? For example, I pull over every 30 minutes for 5 minutes.
What particular action makes it feel worse and better?
If your pain persists for more than a few weeks, see a Health Care Professional - MD, chiro, nurse, P.A. Good to catch early or to rule out other things, especially if you have crossed over into the persistent numb/tingling stage.
Rest (cutting your riding in half or take a break for a week or two) and see how your hands/fingers feel?
Ice or heat, see what feels good.
Some take NSAID (Ibuprofen or Naproxen) for inflammation/pain or Tylenol for just the pain. Careful with NSAID's if you have stomach or organ issues.
Don't all of the sudden decide you want to strengthen your fingers/hands. They likely need a break. Gentle stretching and normal movements.
I have said enough. I will let others pipe in about important stuff like lightening the grip.