My baby had been resisting day time naps for a little while now. Its 50/50 whether he goes to sleep, and on the days he does nap it will then take him about an hour to fall asleep at bedtime.
An example of a day with a nap would be.. wakes up at 8am..I try to get him to sleep 5 hours later at 1ish, he will have been showing some signs of tiredness. He will by some miracle fall asleep for about 1.5 hours.. I then put him to bed 5 hours later and it will take about an hour of rocking or breastfeeding to get him to sleep.
Without a nap would be.. wakes up at 8am.. I try to get him to sleep 5 hours later at 1ish but he will resist (I always try breastfeeding and rocking in the house, and then take him out in the buggy after) and I will eventually stop trying. He's had some quiet time though and seems less tired but by 4pm is getting ratty. I put him to bed at 6pm and he falls asleep quickly.