Mommy is even more confused

Last night, Abi fell asleep around 7 (maybe 7:30).  Woke up at 9:30 when Daddy put her back to sleep.  Next, she woke up at 3:30 to eat.  It is now 7:24:54AM, and she is still asleep!  I guess the 4 month sleep regression abruptly ends when the baby turns 5 months old – how convenient namewise.  The next sleep regression occurs at 9 months – assuming the same pattern, I guess I will have to mark her 10 month birthday on my calendar on the day that that regression will end.