I didn't find a previous post this would fall under, but I have some unsolicited advice for after LO is born.
Before baby arrives, get a book on kids sleeping. DS was sleeping 6-8 hours a night from 2 months and then we hit the 4 month sleep regression, which is a real thing and really sucks if you're working and can't be up every 2-3 hours at night and not have oatmeal brain. I love Dr. Ferber's "Solve your child's sleep problem" because it covers sleep issues through adolescence. Even if you don't want to do cry it out, his book explains how their brains develop and why they regress. Which helped me have more patience and realize my 4 mo old was not being a dick on purpose.

Why am I recommending it now? It would be a good way to pass time before LO arrives and you don't want to wait until you have a problem. Also, we've been having major sleep issues with DS so I went back to my book yesterday and we followed one of his methods last night. Tonight? He went down without a fight. Huge sigh of relief!
Full disclosure: I swore I wouldn't do cry it out but after 2 weeks of him regressing, I was at my breaking point and willing to try anything. In 3 days, he was going down without a fight and sleeping 12 hours straight. So I am a huge fan of Dr. Ferber. I had never heard of sleep regression, so hopefully this will help some FTM out there.
Re: Baby sleep advice for FTM
https://www.yahoo.com/parenting/sleep-training-what-is-the-perfect-age-118314978067.html
My only advice would be to wake that baby up during the day at least every three hours to eat. Our daughter started to stretch out her nights around 6 weeks because we woke he during the day and got her full before she went down for the night. Strip em naked if you need to, just wake em up!
More Green For Less Green
We might need this thread more than ever when these kids are out!!!!!!!!!!
I did let my boys cry it out at around 8 months. We were on a family vacation and sharing a room with the boys. My son started to cry and I had to go to the bathroom, so I headed to the bathroom before I got him. As soon as I left the room, he stopped crying! The little stinker. I knew at that point, that it was more me that he wanted and not so much wet, or hungry.
That's what I did wrong!!!