T., I purchased the Healthy Sleep Habits book today which is comparable to reading a legal brief (awful). Once you get past the useless stats and quotes, the book basically lets you know you must follow the baby's cues. Between 4 to 9 mos it is expected to feed the baby at least once during the night (4-6 hrs after evening bottle) with three naps during the day between 9am and I think 3p. If baby misses 1 of 3 naps, put baby to bed earlier. If baby is not getting three naps during the day it disturbs nighttime sleeping. If baby wakes more than that it is because baby is going to bed too late and is now overtired. And, when baby does wake up at night do not rush to baby's aide. Baby MUST learn to self soothe. After 4 mos, baby now wants to go to bed for the night bet 6 and 8p instead of 8 to 10p. After 9 mos, sleep problems arise again because baby's third nap is naturally eliminated unless the baby is sleep deprived from not getting the three naps in the previous cycle due to some disruption in schedule. The book is pretty much on point.
I thought my baby wanted a nap at 5:30-6p but she should go to bed for the night because now she only naps twice during the day. I kept her up and made it worse for both of us. I know this is long winded but I hope it helps.