Thanks Marlene for the post as I have been thinking the same thing & my DS is a little older than yours. He hates the process of being wrapped but seems to sleep better once he is wrapped. He is also still in his cradle so the few times I have put him a sleeping bag he plays with the side of the cradle so I have to put him in the cot which I am putting off. Anyway as he is getting bigger then the wrap he is making them looser himself while he sleeps, I don't wrap his legs so much anymore - mainly his arms. I don't wrap him so tight anymore either in an attempt to get him use to the idea of not wrapping him.
Please keep us updated, thanks