My daughter is 16 weeks old and for the past week will not nap during the day anymore without lots of screaming!! She still sleeps over 10 hours every night without waking but she used go down for naps during the day without any trouble and would sleep for 30 minutes to two hours at a time! Now she fights going down for a nap even though she is visibly exhausted! I have to rock her to sleep and then lay her down in her crib she will sleep for 10 to 15 minutes and then wakes up screaming!! She seems to only want to take naps laying on me!