The work day
By working hard and being determined you could potentially find an employer that offers more of a 9-5 position. I have found many prep cook positions that are part time, but as far as getting weekends and holidays that is more difficult. You might find someone who can be flexible with your schedule of being a mom, or you might have to work into the hours you want. Don't be discouraged. If you are passion driven like many of us in the industry you will find a way to make it work.
By the way: I am also a mom of a young child. I have given up a lot of time with my little one to pursue my career dreams. His father has played a very strong role of support and my child has also been very understanding.