I have an underweight 2-year-old and we've been recommended to wean (or at least night wean) him because of tooth decay issues and also in hopes that it will help him gain weight. I'm not sold on the idea that this will help with weight gain, but we're giving it a try. Also, I think he's ready - all of his 2-year molars are in and he's close to being able to sleep through the night.
The first midnight without nunus was predictably rough, but on the second night we didn't even get out of bed (still co-sleeping) and I thought all was going well...
Then he didn't want to eat all day, and now he has a low grade fever (100.4). I don't want to backtrack on the nightweaning, but if there's ever a time when a kid needs nunus, it's when they're sick. Still nursing before bed, first thing in the morning, and at naptime.