Owen was doing great w/ sleeping until.......he hit a little over 4 months old. I'm about ready to rip my hair out. I've gotten only 6 hours of sleep in two days and it's killin' me! Originally he would go down for about an hour for his morning nap, take a 2.5-3 hour afternoon nap, then go down at night around 8:30p, wake up once for a feeding around 0300 then up around 0645. Now............he only takes about a 30 min am nap, wakes up CONSTANTLY during his afternoon nap and then only sleeps for about 20 min's after I put him down for the night. Last night he woke up about 8x!!!!!!!!! I'm utterly exhausted and have tried literally about everything. I'm reading Healthy Sleep Habits Happy Child but some things he's just not ready for yet. Is he still too young to learn to self soothe?? A triage nurse told me that I should go in every 10 min's or so and check on him, pick him up for a bit and then put him back down. She said she wouldn't start letting him cry for a long period until he's at least 6 mths old. As soon as I put him down in his crib after bf'ing, he's awake or shortly thereafter. It's as if he's a newborn again and I'm about ready to have a meltdown. I've read about a 4 mth old sleep regression but wondering if anyone else heard of this or has experienced this? If so, how long does it last b/c I'm a person who doesn't function properly w/o sufficient sleep (needless to say I'm not getting it nor will I be for quite some time). Sorry for long post but I'm desperate.