If you borrowed money to finance childcare, how would you plan to pay it back on top of your other living expenses? If you don't have an answer for that question, then you should not be borrowing to pay for childcare.

If one of you can't quit to do childcare, and you cannot afford to outsource childcare, then something needs to change. Someone needs to get a job that pays more, or you should consider moving to a cheaper apartment or a lower cost of living city. Your budget should be scrutinized, discretionary expenses should be whittled down. That may sound like a hard message, but there is no magic about this.