Bouncymummy, It may be that your DS is approaching his Wonder Week 19 and is fussy because of that (there's a great book called Wonder Weeks about baby's brain development). My 5mth old DD does most of her naps in the wrap, too, but once or twice a day I would lay down with her on my bed and mostly I get lucky - she falls asleep and I can sneak away. It does not work all the time, though. And I don't have a toddler at home - respect to you!
9/24/12 at 1:56pm