How do other families do it without childcare

We both work outside the home and have two little ones. My husband works as the primary breadwinner about 60 hours a week. I currently am working 15 and need to be working more. We have no family to rely on and cannot afford childcare we are barely making ends meet. The problem we are exhausted. We hardly see eachother more then a minute or two a day and we are getting burned out. Also baby still wakes up to breastfeed at night. He is refusing bottles so I can't be away for long periods of time also causing exhaustedness for me.

How do other parents do it both working outside the home and not having help?