Yeahh... we didn't plan it that way, but here we are. lol I think it's all a matter of what you're used to. I am used to six kids now, so it's normal, ya know? You're not, so it seems like a lot.

I remember a conversatoin with a friend when I only had 5 kids, and she said something about her friend with five kids (someone else) and I was like, "FIVE KIDS?!?! Is she flippin' CRAZY?!?"
My friend was like, "uh, Lisa? YOU have five kids." Oh, right. It's just when it's someone else it seems huge! lol
Actually I would say in your case, becasue you're breastfeeding, it is not unusual to not have a period/not ovulate until weaned, especially since he nurses so often, including at night. LAM doens't work for all women, but it often does until they are not drinking too much.
In my case, well, either my body is trying to protect me from myself

(because I'd be pregnant by now if my body co-operated) or it's just becuause it is normal for the first few pospartum cycles of any woman to be unpredictable and have a short lp.