I know in the short term, going back to work and spending the equivalent of your entire earnings on childcare seems pointless, but the longer you are out of work the more irretrievably your earning potential collapses.
Let's say you go back to work in April, and you earn 24k and BETWEEN THE TWO OF YOU your childcare ends up costing as much as your take-home pay.
Next year you're going to be on 26k.
Then 28k.
Then child 1 starts school - childcare costs drop dramatically.
Then maybe you're going to do a Masters at night or some other enhancement to your qualifications, and 5 years from now, when your baby is starting school, you're on 35k with no childcare costs.
Maybe your qualifications and previous career mean you can add 10 or 20k to those numbers, I don't know.
But if you wait until the kids are at school, suddenly you've been out of work for SEVEN YEARS, and you'll be damn lucky to get in there at 24k.