I’m thinking that maybe the baby going to the Mil although wonderful to see him would it be too much for a terminally ill person to care for, I think you are living far to close to them , you visit them anyway you said for a few hours every week so it’s not as if they have no contact with their grandson, so your dh has gone back on what you both agreed on, that your son would be going to nursery, but is now saying he should go to your in-laws every afternoon I totally agree with you, you are his mother, I wouldn’t be happy, you should put his needs first as you were doing, I blame your DH I’m afraid he should stand up to his parents you and your son come first, to be perfectly honest if there was a way that you could stay at home and look after him I would do that, he’s very young and you could go back to work when he’s bit older