First off.
Lower your water. Getting the frys to attach during the next 24 hours is very important. I would cut back on the feeding and I don't usually do WC until the frys are attached.
This is what I do for my pair. Once I see wigglers, I get ready to remove my sponge filter from the tank cause once they go free swimming, they head for the darkest object in the tank. Once they are free swimming, I take out the sponge filter and lower the water to just above the fish height. I keep an air stone in but run at very low setting. For some pair, the attaching takes longer than others.
I like to introduce bbs by day 3 or 4 after they attach to the parent. By the end of the first week, I start adding shaved fbh to their diet.