I can't lay with them to sleep anymore. Now what?

How do I get these guys to go to sleep? I can't do it anymore. Logistically, emotionally, mentally, and physically. It seems like all I do all day is lay in the dark while a child struggles to get to sleep, and often times this means someone is running amuck in the house. Yes I have a lot of very smalls. Yes it's triage. But I'm at a breaking point and it's putting a strain on the family. Everyone says if it's not working, change it. So what are my options? Cry it out for the 3 and 2 yo? I'm pretty much willing to give it a try. And why not the 4mo while I'm at it so we're not doing this all over again in a year or so?

I'm not looking for opinions or criticisms, but real advice.

We currently have everyone in one room. Toddler bed, pack n play, baby in bed. DH on couch. He needs to sleep and is really little help because he falls asleep sitting up and so count him out. It's gotten progressively worse since #3 came along. Other two take so long to go to sleep and they both still need naps and lots of night sleep. I give them lots of attention and fill their tanks and their bellies during the day and we play outside a lot. None of this has a bearing on how long it takes them to get to sleep. I just seriously need them to be able to do it alone. I spend at least an hour with them twice a day and two more 20 min or so sessions with baby. So that is nearly 3 hours a day. Doesn't sound like much but I could also have a house to clean, I need to bathe, and cook and take my stepson to and from school and be a wife and spend time with he Lord. And I can't do all that while I'm laying with them. It's too distracting even to pray or sing or quote scripture to myself. And it just takes. Too. Long. I'm spent. Help.