Any mummies here resigned after going back to work after maternity?

I resigned after I took so long to find a new job( I had left my job when I was pregnant) the new job was just too much for me to handle. Coping with a new environment and lots of workload , i can't take it and I feel sad everyday when I can only see baby for 1.5 hrs and I was unhappy everyday. I am thinking to find something part time if I can or a less junior job. Not sure if this is the right cchoice coz financially will be tight