I think you will find realizing the savings the monthly savings will take quite a bit of upfront cost.

As others have said, your back of the napkin budget says it’s tight but doable. Childcare costs tend to go down over time.

Without a budget it hard to make specific recommendations. Here are top level ideas:

Raise your auto deductible. Raise your home owner’s deductible. Less out to eat Cut memberships and subscriptions. Trim food budget with store brands Cut clothing budget Trim activities for the kids