In general, being very strict to the books, Tracy is saying naps should be in a cot.
But:):
- when you have 4 naps a day - 1 or 2 in the stroller shouldn't be a problem; I would just try to make another 1-2 at home
- stroller is a great thing for afternoon catnap - really any many kids refuse to take it in a cot, and these so called witching hours (5-7pm) are only to be survived with a swing or stroller:)
- I was using stroller for 3rd nap in EASY routine up to 3-4mo and when transfered to 4h easy, I did catnap in a stroller - not a big problem at all!
- on days when I did much more naps in a stroller or when summer on 4h easy with 3 naps and 2 naps were in a stroller, I used a stroller as a crib; which just meant I didn't settle DS with rocking but just shh/pat him in a stroller.
HTH