Like Donutz said and I still have to do this as well. I can tell when my weight is centered or leaning back. I actually have to move my weight forward.
If I recall correct I just started with falling leaf. That came fast 1/2 hour, then I went right into "large" linked turns. As I got more comfortable I tightened them up, if needed I would flip to my normal stance (goofy) to save a fall or just regain my composure and then start again.
Keep at it and as mentioned above, it is learning all over as a newbie, not riding backwards. Also are you "duck stance" this helps a ton.