I have a friend who's little girl did this. She only wanted to nurse on the right side also. My friend nursed her until she was a little over 3 on just the one side. I know some kiddos just prefer one side over the other, but it may not mean that they are going to wean yet. I hope it all works out.
Pouches, Ring Slings, Mei Tais, and Wraps to Keep Mamas and Bebes Close