Molly, I don't think pregnant again by 6 or 8 weeks could be considered a good thing by any stretch of the imagination. That was another thing that had me puzzled about the GF book. You can get pregnant after childbirth without ever having a period and it is not good for the mother.
Igggi you are absolutely right about what research is finding out the more frequent waking (that often comes with breastfeeding) is important when it comes to SIDS. MadameChinLegs, here is what is wrong with 'training' babies from the getgo: Newborn Sleep Patterns
'...newborn sleep isn?t completely divorced from the natural rhythms of the 24-hour day. Studies show that circadian rhythms begin developing in the first days after birth. For example, a German study reported that 2-day-old babies were more wakeful and slept for shorter periods during the daytime (Freudigman and Thoman 1998).
Another German study showed that during the second week postpartum, babies slept more at night than they did during the day (Korte 2004). And, in Japan, Matsuoka and colleagues (1991) reported that 1-week old infants slept more often after feedings that occurred between midnight and 4am than after feedings at any other time of day. By the second week, infants slept more frequently between midnight and 8 am than they slept at other times (Matsuoka et al 1991). This was true even though infants continued to receive night time feedings.
This doesn?t mean that your newborn?s sleep schedule will resemble yours any time soon. It takes about 12 weeks for infants to show day-night rhythms in the production of melatonin, the ?sleep hormone? (Rivkees 2003). And circadian changes in cortisol?a hormone that regulates waking?may take even longer to emerge (Rivkees 2003).
Overall, babies may take 3-5 months before they ?settle? at night?meaning that they sleep for more than 5 hours at a stretch (Jenni et al 2006; Pinilla and Birch 1993)....
...When a newborn first falls asleep, she enters into immediately into ?active sleep.? This rather restless sleep state is the newborn-equivalent of REM (rapid eye movement) sleep in adults. Just as adults are more likely to awaken during REM, newborns are more likely to awaken during active sleep (Anders 1979; McNamara et al 2002).
Newborns remain in active sleep for about 25 minutes, after which they slip into a deeper sleep state known as ?quiet sleep.? Compared to active sleep, quiet sleep is characterized by slower, more rhythmic breathing, little movement, and no eyelid fluttering. Babies are less likely to awaken during quiet sleep, but this situation doesn?t last long. After another 25 minutes or so, the sleep cycle ends. Newborns then either awaken or begin another 25 minute stretch of active sleep (Anders 1979; McNamara et al 2002).
So newborn sleep is different in several important ways. For one thing, newborns spend much more time in active sleep than adults spend in REM. Whereas adults spend only 20% of their sleep time in REM, newborns spend 50% of their sleep time in active sleep. As a result, newborns spend a much greater proportion of the time ?sleeping light.?
For another thing, newborn sleep cycles are much shorter than are adult sleep cycles. Instead of 90-100 minutes, the average newborn sleep cycles lasts only 50 minutes or so. As a result, newborns are vulnerable to awakening much more frequently.
This sounds like a raw deal for parents. But the truth is that newborns probably benefit from being light sleepers. Having a low threshold of arousal may protect babies from SIDS....'