You don't need to cry ka, today辛苦 only in today, everything will past it.
more relax youself la. if you feel 辛苦, go to take a cup of tea or coffee, and go to the side of the window, and have a look, let youself relax. may be you can see some child playing very happy, and thinks about after your baby grow up, is same for them, play in the playground. don't give youself 壓力.
It's difficult to change maid while the kid is 2 years old. My sister-in-law changed the maid while her daughter is 2 years old. She has the same problem. Her daughter didn't eat!! It lasted around 1month.
Both the kid and the maid need to know each other. It takes time. I agreed that kids' first priority, especially safety. For the rest, take time. Cooking is difficualt but just let you have a chance to losse weight.