You are doing great. If you really want I'm sure you could just stick with the night feed. You are not weak. It is so hard denying them the only thing they've had for comfort for so long.
I do have a friend who just weaned her 16 month old. It did take the best part of a week, & now, 11 days later he will still remember & point to them, but won't get upset, or really ask for them.
You've done a great job so far!