Based on my experience in using DHA, if I were in your shoes, I would start off with a couple of 500mg Carlson Super DHA
per day and after about 3-4 days, double the dosage
. After a week at 2,000mg, your feelings don't improve, then I would increase dosage to 2,500mg per day for another week. Still need more, then increase dosage to 3,000mg per day.