Reflux & Regurgitation Baby - 7 weeks old

Have a 7 week old baby. At 6 weeks, he started vomiting / projectile vomiting after every feed or every second feed. Went to hospital - done all the checks, told us everything is good and the sickness can be normal but come back is green. He was fine for 3 days bar one vomit per day but from last night through to today it has increased to almost after every bottle. He is only interested in approx 2 oz every feed. Most of the time he is content but today he is being particularly aggravated. Any recommendations on what we should do?