I would not quilt it before treating the bleeds. Stay stitch the outside raw edge of the quilt. What kind of washing machine do you have? I've successfully done this with my Speed Queen, which fills the tub all the way to the top with water. You need a LOT of water. You will also need to have the ability to stop your machine from agitating. The way I did it was to turn my water heater up to 140 degrees F. I filled the washing machine with hot water and a teaspoon or so of Dawn. Once it was full and was going into the agitation cycle, I unplugged the machine and let it sit overnight. The next day, I plugged the machine back in, hit cancel on the cycle, let it drain and spin. You do not want to let it agitate, because you'll get all kinds of strings and fraying on the back side of the top. Then I took it out and let it hang dry. You'll likely need to press it again.