Actually if I have to face this situation, I rather keep the maid, then find cheaper nursery 1 class for the boy.
When I was preggie my maid went home & we were waiting for our new maid for around 2mths. It was very tough with housework when we have not even have a kid yet.
After a long day at work, I'm very sure I do not want to have to go home to worry about food & housework. I would rather scrimp & save elsewhere than to have to slog out at home after work.