I have a 5-year old son and a 5-month old son. And with my second baby, it is ALMOST like he is my first, because he is so different. Due to severe reflux, he slept in his swing and car seat for the first four months of his life. I moved him into his crib 3.5 weeks ago. And it has been my definition of hell. Most nights he was up 3 times. And some nights 4 or more times. And absolutely nothing but nursing calms him down. I guess I should feel lucky that I DO have something that puts him back to sleep right away. But I would have liked it if my husband's attempts at shh-ing and rocking him would have worked.
Because he is my second, I knew that 4-6 months was a tricky time because babies can't quite self-soothe, but they aren't in that newborn phase where they can sleep anywhere either. So I persevered.
I THINK we are starting to see the light at the end of the tunnel. Since I moved him to his crib at four months, I have had to nurse and rock him into a deep sleep for every nap and throughout the night. But then, about 5 days ago, he just wasn't falling asleep while nursing, so I set him down in his crib, slightly fed up, and walked out for a breather. He cooed and kicked AND FELL ASLEEP on his own!