Change first day of week for practice tracking

My weekly lesson is on a Thursday, it would be great to have the app track the qty and volume of practices Thurs to Thurs rather than Mon-Mon so I can report amount of practice between lessons. Thanks!

Ohh this is a bit of a niche feature, I get it would be more convenienet but given our other features in the backlog I am not sure we would develop this! Just count the 1-7 days you practiced by hand? Haha :P