Hi Bon @bonwalsh1, Welcome to Connect. I don't think you are alone not liking the side effects of gabapentin and Connect is a great place to connect with other members sharing your condition. There are many different discussions on fibromyalgia that might be helpful. Here's a list from searching Connect for "fibromyalgia what helps" that you might want to scan through to connect with others - https://connect.mayoclinic.org/search/?search=Fibromyalgia+what+helps.

Here's an article I found that might provide some additional suggestions if you haven't already seen it.
-- Fibromyalgia Fatigue: What Causes It and Tips for Management
https://www.healthline.com/health/fibromyalgia/fibromyalgia-fatigue
Did your rheumatologist offer any suggestions other than medications to help with the fatigue?