The only way to fix it is during the day all shades are open, be noisy do chores as you normally do without worrying about waking the baby. If he naps make sure it's in a bright location . At night make sure it's completely dark , no tv , try to talk as little as possible around your baby . If you nurse him try not to turn on bright lights . Other than that it will sort out on its own . I had to go through this too it really sucks !

Try the childrens sleepytime tea and a warm bath my son was like that and after this he was out. He's not having night terrors is he?