I hate to say this, but I know how you feel. One of my pullets is 43 weeks old and the others are roughly around the same age. I sold two of my girls (the 43 week old's hatchmates) and three days later, the OE that I sold laid her first egg. Later that night, I felt the pubic bones on all of my girls and only two of the four that I have left are even close to point of lay.
Good luck and hope yours begin to lay soon now that the days are growing long again.
Good luck and hope yours begin to lay soon now that the days are growing long again.