Ok, I'm thinkin' this isn't a really common thing.
I'll try and clarify a little more, but I'm not sure it'll really help
Basically, he seems to have two tracks of development going on, one in which he's doing things in a normal developmental sequence, a bit earlier than most kids do, but nothing extreme: he matches an "average" 12 month old most of the time (at 9mos), but sometimes, usually for about a half hour a day (not necesarly all in one block) he seems to kinda hit a stride, and then he does things that are all over the map in terms of normal development... there's no rhyme or reason to it at all. An example is that he can generally walk a couple of steps at a time. But since about 7 months, he's walked a significant distance about once or twice a week. When he takes off walking, he walks like an older toddler, when he takes a couple of steps, he moves like a baby. It was confusing when he was doing the "breakthrough" walking, but not yet actually walking... It's still a bit confusing....
I've been doing something like this with my schoolwork... I read the whole course, and while I'm working though the part I'm on, I jump ahead and do some of the most difficult parts of the rest, and then just keep modifying them as I go, until it's time to actually submit them. I thought I was being clever about eficient studying, but now my 9 month old is doing the same thing, so 'ya know
Anyway, like I said, I'm just trying to understand him. I tend to overthink things, so I'm overthinking this! In fact, I am overthinking this post right now, so I'm gonna stop and just post it now!
