Are you able to see a sleep specialist? They do sleep tests, and push for the multiple latency day time study too. See if you have narcolepsy. It took me years and advocating for myself to get diagnosed

Ask for a different doctor and then request blood tests for autoimmune and vitamin levels etc as you’ve been struggling with chronic fatigue for 11 months specially like that and hopefully it’ll help you get some answers

I have sleep apnea and B-12 deficiency....I would ask for extra sleep and blood tests.

Also, request blood work if they won't send you to a specialist . If they kick back, demand it. Fatigue is often an imbalance of hormones or nutrients (or both in my case). At the least, it's a "trust but verify" method that causes no lasting harm.

Definitely ask for your thyroid levels, vitamin D and B to be tested. If your doctor refuses tell them to mark in your charts as a refusal (that pretty much always shows them you’re serious) and if that doesn’t light a fire under their butts go to a different doctor like an endocrinologist, GP, nurse practitioner, or honestly instacare. I couldn’t get my doctors to test my sodium levels within a few days (I thought I was critically low) so I just went into instacare and asked for an IV and an electrolyte test and they did it with no fight.