Landlocked said:
Peapod, you have 4 so I know you have an answer to this one....
Ugh, don't ask me, I'm no expert on anything!
What I have found is that kids are all so different. There are all sorts of approaches out there about what's supposed to work, which techniques are most effective, yada, yada, yada. In the end, I honestly think it comes down to the individual child's personality and what you as a parent can tolerate.
Lots of people believe in the cry it out (CIO) technique, but there are parents who honestly can't deal with that. If, then, bringing Little Man into your bed calms him down and allows you to get some sleep, then that's what works for you. Although it sounds like your three-in-the-bed thing isn't working too well for the Big People.
I had three great sleepers and now have one not-so-good sleeper. I've done it all trying to get him to sleep in his own bed--sometimes it works, and sometimes it doesn't. I'm noticing, though, as he's beginning to feel more independent as an awake person, he's more willing to sleep in his own bed. If I were you, I would continue to try to encourage him to stay in his own bed and go in and soothe him every few minutes, then walk out. But, if this doesn't work, and/or the crying is too much to take, don't feel like a failure! This, too, shall pass. And I'm told one day you'll miss the fact that he ever wanted to snuggle in the first place...