Sorry for the tardy response ... I got sick, then Ava got sick, my husband had a root canal - one of those weeks .
Your son sounds just like my brother was: he weighed about that much at 2 and he didn't start talking until 2 - but then in full sentences. Each baby has it's own schedule, I suppose. I do, however, hope that I won't be nursing all night any longer in a year from now. One reason is that I'd like for Ava to have a sibling and I am sure that level of nursing is effective birth control. I am in my mid-30s, so I don't want to wait too long before I (hopefully) get pregnant again. On the other hand, if this is what is required for her to get her nutrition, so be it.
I took Ava for a weighing again today and she had gained 5 ounces in the past month. Her pediatrician was happy with that and said that I should just continue what I have been doing. I was happy with that!