You can pull the wrigglers out now if you want/are careful enough. I 'accidentally' separated my fries from their parents when they were wrigglers, and had to take care of them. XD Turned out to not be so hard, in my case anyways. They fed off algae growing in the tank.
Lol, i think i will wait til there free swimming since they are almost at that point anyway. I think they finally got it right and will be good parents for now on.