This is my third child. I nursed my first 2 to about 23/21 months. This one is still going strong at 2 years old and she doesn't show any signs of wanting to wean. I never saw myself nursing past 2 either but here we are.
She typically nurses in the morning, before and after nap, and before bed. Sometimes she wants to nurse more often than that but I just tell her not right now and she is ok with it.
My only tip is that it seems to get MUCH easier at about 5 or 6 months and if you can just stick it out til then, the nursing relationship usually becomes smoother if there are any challenges.