So tired of being SOOO tired

I had a craniotomy and a frontal lobe AVM removed a year ago this month. For the most part I have done well. The one lasting side effect that I struggle the most with is the Fatigue… I get so tired doing things I use to do without problems. Driving seem to take the most out of me. Any drive over 30 minutes or so and I have to pull over and take a nap. Its really becoming an issue as I commute to work at least one day a week about 45min. Has anyone else dealt with this? this fatigue part of my new normal or will it get better?