L.M.
Hi J. ~ My thoughts are for you to hang in there. By cosleeping til now you have been responsive to your baby's needs and this sounds like a new phase for your babe. Allowing him to cry it out would be the opposite of responsive and I believe your instinct that he would feel abandoned is accurate. Could he be teething or having a growth spurt? Are there changes in his life or developmental achievements (like when he started walking,etc.)? My daughter is 29 months and still sleeps with us - she's a screamer, too, meaning she is persistent and insistent about what she needs. But she is also growing to be a happy, well adjusted and respectful child.
My feeling is that if he had a better sleep pattern before, he will return to it when it's time. Try the No Cry Sleep Solution for Toddlers or Dr. Sears' Sleep Book for suggestions. Good for you for being a compassionate and responsive mother. Good for your son - he's a lucky boy!
My final thoughts about the "self-soothing" philosophy is that most adults do not have good self-soothing/coping methods for their own stresses and fears and yet our culture has decided that our babies and young children need to go thru crying in order to learn to self-soothe. Don't be fooled - a baby that can be sleep trained easily by some "method" is one thing but if there is a strong or persistent opposition to the training method there is probably a stronger need for the parent's comfort. Self-soothing skills take a long time to learn - not two or three days or nights - and good coping mechanisms will last a lifetime - as well as whatever it is a baby/young child "learns" during sleep training. I would seriously think about teaching my child anything in which they learned their cry for help was unimportant to me. Best of luck to you and your family.
L.
Mama to Lydia 1/5/06