O can't sit up, or crawl properly, yet he can pull himself up to stand? I'm flummoxed!!
W can Sit up, but he can't crawl, pull himself up to a standing position on his own, but is just about able to stand unaided.
Children are strange.
No personal experience but when H's brother was little, he hadn't shown any signs of crawling at all but one day, when mil stepped outside to hang some washing out he stood up, walked over to the door and shut it, locking her out. Scary thought!
Popcorn my cousin did something similar at a family wedding....he was sitting on the edge of the dance floor...hadn't crawled or walked or even stood up...but we were all dancing and he got up walked across the dance floor and sat down on the other side. Id not have believed it if I hadn't of seen it!!!