Y'all need to realize that the expression "tough love" was coined when describing how parents need to deal with their adult children who are suffering from drug and alcohol addiction. THAT is when "tough love" is appropriate, not for young children.
M., you sound like such a gentle, doting mom. Good for you for refusing to Ferberize your baby when your instincts tell you not to! Your son just needs to know that he is safe, and he may only feel safe when he knows you are near. At that age, they are so scared of being alone. Remember that object permanence is fairly new to them - they're just getting the idea that if you put a toy under a blanket the toy is still there. They certainly
don't understand that when they can't see you, and you don't come to them when they cry, that they are safe. When they cry and get no response, their blood pressure, heart rate, and stress levels skyrocket. And we now KNOW that ignoring your baby's cries, allowing them to cry unnecessarily, harms their nervous system in permanent ways. According to researchers at Harvard's Medical scool, "the early stress due to separation causes changes in infant brains that makes future adults more susceptible to stress in their lives." Follow your heart. This should make you feel good about all the holding, snuggling, and rocking that you are doing: http://www.hno.harvard.edu/gazette/1998/04.09/ChildrenNee...
However, you do sound like you are ready to have you own bed back again, a perfectly legitimate desire, so you need some practical advice, too.
It sounds like your baby starts off in his own bed, and then wakes at 2:00 am. I would recommend lying down next to him for a while when he wakes up in the middle of the night. (Is his mattress big enough yet? I'd ditch the crib if he's in that- he's old enough to climb out and get hurt in the fall.) At first, he will want you to stay until he falls asleep. But you can do things gradually - bring in a small booklight and read while sitting in his bed, then maybe in a chair next to his bed.
Some parents ease their children out of their beds by putting the child's mattress in thier room, maybe at the foot of your bed. But it sounds like you already have him in his own room for the first half of the night, so that may not be for you.
Elizabeth Pantley has a website with advice and a couple of wonderful books for babies and toddlers. ("The No-Cry Sleep Solution" and "No-Cry Sleep for Toddlers and Preschoolers"
http://www.pantley.com/elizabeth/advice/0071381392.phpnid...
From Ms. Pantley's says:
"You are probably frustrated and confused. What you lack is perspective. To gain that perspective, ask yourself these questions:
Where will I be five years from now?
How will I look back on this time?
Will I be proud of how I handled my baby’s sleep routines, or will I regret my actions?
How will the things I do with my baby today affect the person he will become in the future?"
Good things to ponder. Babyhood passes soooo quickly - be patient and go gently, slowly and gradually. Good luck.