Why not just start from scratch at 1 Jan 2019? Just offer the Most accurate in the last 8 weeks and Mountain Climber and Best Newcomer jerseys from the end of January onwards (or perhaps end of Feb?) and then include the other jerseys once you have enough data, maybe from July 1 onwards or even perhaps after a quarter so from April onwards. Just a thought. It's your competition now. Don't be afraid to put your own stamp on it. We'll all fall in line.