It is called active parenting. At this stage, you have to be involved every minute of every waking hour - there is no slacking off or me time. It will all be about them for the next ten years. Government aid? Are you talking about financial aid or physical assistance? I don't know where you live, but you might want to call the United Way and relay your need.
Good luck! Wow - 6...........
Edit: Do not hit your children - I mean it. That is an outdated and dangerous form of discipline. Firm and consistent time-outs are quite effectual.