When I first returned to work, I worked p/t evenings and weekends, so i could look after the kids during the day and not have to pay for childcare, and then DP watched them while I worked.
And as other people have mentioned, if you return to work and are entitled to the ccr and ccb, it can bring the cost of childcare down quite substantially.
Also, are you receiving rent assistance?
ETA: OP is the $7 a payment such as parenting payment? or is it FTB?