DC2 isn't due til April but I like worrying about things ahead of time
DS was a terrible napper when little and would require walking round the block five times a day, or bouncing in the bouncy chair. Eventually he started cot napping around 5mo but it took a LOT of effort on my part (cuddling or rocking to sleep, rushing in to pat him when he stirred, etc) until he finally got into a half-decent nap routine.
I am assuming that this kind of effort will be impossible with a 2yo at home as well, so is it inevitable that subsequent babies will never have as good a nap routine?