My DD is 4 and a half months and the only way we can get her to nap during the day is if we let her sleep on one of us. The odd time we can put her down and she will stay asleep but most of the time if we do this she will wake up almost immediately. She didn't used to be like this, I used to be able to put her down once she'd fallen asleep on me and she'd have a good 45 mins - 1hr.
Her night time sleep is great, we give her a bottle in bed upstairs around 10:30 and she will sleep through until 6ish.
Am I making a rod for my own back by allowing her to do this? Or do I just carry on and wait until she's a little older before trying to put her down for naps again?