Re: what comes next
I stopped pumping with both my girls when they were a year. And I don't remember when I stopped worrying about wet diapers, but that was well before a year. You get to make up the rules as you go. With my 21 month old, I nurse on demand, still, but that looks more like 4 to 5 times during the day when I am home and then every couple hours overnight. She eats (sort of) three meals a day and two snacks. Some days she doesn't eat much. I don't really pay much attention - we offer food, she eats it or doesn't. I have recently started only nursing at home - although if she really needs to nurse and we are out and about, I will nurse her. It seems like a lot of women get their baby down to a just before nap, just before bed and upon wake up nursing kind of schedule. I haven't done that, but could see myself doing that if nursing started to bother me.
You don't have to introduce cow's milk, but you can. It's up to you.
Lilah 10/08 nursed 25 months
Beatrix 01/11 nursed 30 months