Thank you for posting your query.
I can understand your discomfort on account of reading problems for the past three years, which is interfering with your studies too.
This problem is related to brain. Reading is controlled by the left half of brain in most right-handed individuals. So, in your case, there seems to be a problem with the left hemisphere of brain.
Common problems include lack of adequate blood flow to the area, lack of adequate brain nutrition (including vitamin B12), trauma to the concerned area of brain, or any other pathology including tumors.
Coffee can improve the blood circulation of the brain, thereby providing relief for a short while; however, it does not provide long term relief.
I hope it helps. Please get back if you have any more queries.
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)