How often do they go? Why did they start going?

Babies have been going to physical therapy for the 5 months on a weekly basis. They started going in March (6 months old) and DS just got the okay to stop PT. DD will be assessed next week. They first went for torticollis and flat head. PT successfully helped prevent them having to use a helmet. PT helped with other things too, like crawling and standing. DS is on track for both his chronologic and adjusted age. I'm hoping DD is on track as well. It was fascinating the tests they were having DS do.