In the area I got clean in we had meetings that met on Friday evening and Sat evening. In fact we had one evening one in my town and the next town over had a late night one...exactly as you say, to "babysit" us through that weekend kind of feeling.
I found weekend difficult too. All of a sudden a paycheck in my hand and time and freedom...I had to work on breaking the habit. Hard when we are ready to unwind and relax from the work week to have to get creative about how to spend down time, easy to just slide back into what we know.
But my concentrated efforts did pay off. Is there any way for you to make new friends or find some new hang outs that don't rely on substances for fun? Friday night at the gym?
What did you do on weekends during your years sober?