My LO is almost 7 months old. Right before she turned 3 months, she started taking regular naps. She will take 1 loooong nap starting in the morning and continuing till afternoon. Anywhere from 3-5 hours!! Then depending on how early she went down for the nap, she may take a nap in the late afternoon...1/2 - 1 hours. But that doesn't always happen. She sleeps 11-12 hours at night too. I guess she just loves to sleep. She naps in her carseat. She will not nap in her crib, although she does sleep there at night!! I have never trained her to sleep...she did it on her own. I generally feed her, and she will still be awake, and I'll put her down and she eventually puts herself to crying or anything.