Hello,
For such kind of hair thinning, I would like to rule out alopecia aereata, male pattern baldness, hormonal imbalance or telogen effluvium. It is nonscarring alopecia characterized by diffuse hair shedding, often with an acute onset. There is a chronic form also which persists for a longer duration and starts with insidious onset. Chronic telogen effluvium is hair shedding lasting longer than 6 months. Treatment consists of medications like Minoxidil, surgical approach(hair transplantation) and improvement in diet.
My sincere advice is to consult a trichologist. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Oh and this has been happening for about a year. I see little to no change after improving my diet and the way I wear my hair when I sleep. I'd say it is receding about 1 and a half inches. Can I reverse this? I have not seen a doctor yet.