I don't know where you are but....here we have a lot of wild lovebirds and when mine start up really bad, it's always because they are talking to a wild lovebird. Maybe yours is, too, since it's been worse the last 2 days? If not, this reminds me very much of a lovebird who has been allowed to be dominant. Dominant lovebirds are very noisy, it's like they're saying I'm the boss and you do what I want.
If that's the case, there are things that will help. Never reward such behavior, keep him off your head (maybe your shoulder's, too for awhile), clip the wings (people hate this but it can be VERY difficult to bring a lovebird to thinking you are dominant when he can fly all over, they can grow back out), reward good behavior, never get him out when he's screaming and put him back when he starts screaming....he'll learn that screaming is bad and he'll learn to start to please you and want to please you, too!