Lifestyle question

I have not announced my 13 week pregnancy yet so I don’t really have any one to bounce this off of, so I’m posting here. I’m pregnant and have 17 month old twins. I work outside the home and don’t plan on returning after I have the baby. Daycare is just too expensive for 3. My question is, should I go ahead and turn in my 2 weeks now? I could save money on daycare since my whole check goes for childcare, plus I could possibly earn money some other way (i.e. babysitting, selling unused items, crafts). What would you do?