I'm sorry. I feel your pain. I've had this happen in the past. I wish I could remember how long it lasted, but I honestly can't. A good month or so, I think...at least. I was lucky enough to have the space to seriously separate the screamer. All kids sleep up in the rooms and this one was in a room in the finished basement, which happens to be insulated since it's my hubby's music room. and after all else failed, I just let him scream it out while I watched TV with headphones since it's upsetting to listen to. He eventually gave up and was a dream napper for the remaining 4 years....