Anyone else have a late crawler? My LO will be 10 months this week and has zero interest in crawling. We've been trying to put him on his stomach as much as possible, and he'll look like he may be thinking about it, but then he just rolls around. He started rolling very early and has always been a big fan of it, which may be part of the problem! But he's seems like he's starting to get very frustrated with just sitting and playing. He's in a big whining phase that's getting old very quickly! When did your late crawler start? Any tips?

I should mention he's a pretty big kid - 31 inches, 22 lbs at his 9 month visit. I've heard varying opinions on whether big kids crawl/walk later.