I agree, not to give yourself a specific time limit. Might make it more stressful!
But I was where you are. I was ready before he was. So I just started gently distracting him. But at that point, he was just morning, nap and night. It was relatively easy, I just had to find a different way to comfort him when it was time to go to sleep. It was like he understand, and went with it. Like Shannon, it seemed to be about two months before he was weaned.
I still miss it from time to time, but glad weaning happened the way it did.