RE: Question for those who Ferberized...we are starting tonight!
You have to remember that at 5 months old, probably 80-90% of the babies in this country are formula fed. Pediatricians are not used to seeing breastfed babies at that age.
I do think that twice a night feedings are not abnormal for a 5 month old BF baby. Both of mine were waking at least once a night until a year or longer, and they did eventually grow out of it. We worked on getting to sleep without nursing at the beginning of the night around 7-8 months by having DH rock them to sleep. The middle of the night stuff we didn't even bother with until much later.
Mama to three boys ('03, '05, '07)