Problems with rental house! Help!?

My husband and I moved into a 60-year-old house about three months ago. The house was unpainted at the time. The house is owned by a couple who own several other homes in our area. They asked if the house being unpainted was a problem for us, and I told them, "Not as long as it is painted soon, and the work on it doesn't drag on and on. If it's finished fast, it will be okay." I am pregnant, and when I got into the third trimester, I contacted the landlady to let her know they needed to begin work on the house. Her husband had told me it would take 8 weeks to paint it, and I only had 8 weeks left until my baby could come. They started about two weeks after this. She told me it should take 2-3 weeks, that her husband was wrong, and it would not take 8. Well, our landlord is a do-it-yourself type of guy, a terrible time manager as well, and he has some OCD tendencies. After a week and a half of noisy sanding and scraping, he seems to have fired the painting crew and is now sanding the ENTIRE HOUSE by himself, because no one can get it as perfect as he can. It's been almost three weeks, and he's not even finished sanding/scraping ONE wall of our home. I'm about three weeks from being full term, and the non-stop hammering noise is driving me insane. Our landlord is so slow, we feel that this project could take months. We have made it clear to them from the beginning that ANY work being done on our home when the baby is here is completely unacceptable. They agreed to this, but now it is looking like he may not finish in time. I'm very upset about this. For days, the landlord has been at our house alone, tinkering with the sanding and not getting anything done. I have no idea when the paint team will be back, or if they ever will be. It's just been a major source of stress-- largely because he is SO slow and cannot be trusted to get anything done. My husband and I are planning to tell him this afternoon that we are concerned, and try to speed him along- but the fact is, this is HIS house. He owns it, not us. If he wants to be a perfectionist, we can't really stop him. What is your take on this. Any advice? If I could tell you how loud this work is, you would understand why it cannot go on with a new infant in our small house. :(