Baby Sleep Advice
I used to dispense a lot of advice about helping babies sleep, because we had so much trouble early on with Ben, and then ongoing difficulties with the first year for Rex, that we learned a lot about what worked for them. Many of our friends tried some of what we learned, often to good effect, but it shaped the advice I give, too. A colleague asked on Quora about help with getting a 5-month-old to sleep, and I wrote a long response that I reproduce here, because with Quora you never know if a response will wind up staying in place or not: I have a sample size of two, so take that for what it's worth (one is now 3 and the other 6, so this is still sharp in memory).
Swaddling
You have to do it consistently for it to work, based on my experience and those

I've been meaning to write something here about our awesome vacation in Maine, spent largely on Mount Desert Island. It was awesome in that it went so well, not awesome like it put 3 years back on my life. The boys traveled generally very well. Both wound up with ear infections a few days in, but responded well to treatment. We all slept mostly fine; we all generally did a few things we really wanted to. Lynn and I really want to go back in a couple years when the kids will be able to do more.