I posted earlier about our 21 week old who won't sleep in the crib. After checking in with our ped, she wants us to wait a few weeks to try and sleep train again, but recommended we let baby girl sleep in her car seat overnight. We tried it last night and she slept 8.5 hours, waking up happy! I love our ped and trust her, but am a bit anxious about letting baby continue to sleep in the car seat for a few weeks, because of the SIDS risk I read about on the internet. Does anyone else have any experience letting their LO sleep in car seat?