E.M.
My little girl did 4 naps a day-like 40 minutes each-until she was almost 6 months. Then her wakeful periods became longer, so she could stay up and only needed 3. We are now probably going down to 2 soon (she just turned 8 months). She has taken 1 hour naps in the middle of the day but still needs that 3rd one around 3:30pm. Oh, and we didn't really have that consistent schedule. The only consistent thing was being able to predict how long she'd be awake from one nap to the next. Just recently has she begun a somewhat regular schedule as far as the clock is concerned. I just followed her cues and she did it all herself. If one nap was particularly short, we'd move the next one up, hoping it would be longer, and it usually was. They are basically around 9am, 12pm and 3pm-give or take 30 minutes one way or the other depending on the previous nap.
I hope this helps! This is my first baby, so I am very new at all of this!