DD (24.5 weeks) sleeps on average 2x2 hours, sometimes with another 45mins-1hr in the evening. Bed 7-7 (unfortunately not non-stop! feeds twice in that time, awake both times between 40 mins and an hour). I worry this is too much! [no pleasing some people emoticon]
How did you establish the 2 naps a day thing? I wish DD would stay awake longer in the mornings so she could have a longer sleep. At the moment she wakes at 7am and will be in bed again by 8.45. Then its at least 2 more sleeps of about an hour to 1 1/2 hours. I don't mind that she has several sleeps but that they could perhaps be joined up IYSWIM.
I have no recollection of Ds (41/2) sleep patterns at this age [crap memory due to having 2 kids emoticon]
2-3-4 pattern works well for some babies. Up in the morning, 1st nap 2 hours later; 2nd nap 3 hrs after waking, bed 4 hrs after waking. DS was not at all a 2-3-4 and had 3 naps, the last of which around 4pm, until nearly a year, then two naps until 18 months. Recommendation is 11-12 hours at night plus 2-3 in the day (14.25 hrs total) at this age.