I wouldn’t ask him to canter until he is solid ( i mean really solid) at the walk, trot. Work on transitions, stopping, starting ,large circles etc… I take a long, long time with my youngsters at the walk then trot before we ever canter and it seems to eliminate the need to back track and re do training.
You have asked a lot of his 2 year old brain in 27 days now get him solid and confident in that before you ask for more.
