Hi D.,
I have two children; a 2.5 year old son and a 9.5 month old daughter. With my first child, we would always feed him until he fell asleep in our arms and then we would put him in his bed asleep. He would wake up 30 minutes later crying. At around 6 months of age, we realized that when we walked into the room, our son would pep right up, giggle and laugh out loud. This let me know that he was not ill or needy but just wanted the attention. That is when my husband and I agreed to implement the "cry it out" method. We weren't sure about it and we were reluctant to try it but the reason we decided to do it was because we thought it would be better for our son to learn how to soothe himself to sleep instead of relying on rocking, TV, formula etc.
I do feel that at 4 months the baby might still be very young. However, at whatever age you consider implementing the cry-it-out method, try the following steps that worked for us:
1) Make sure all their needs have been met. Make sure they are not soiled, not teething (are you against giving Tylenol or Motrin for this?), not feverish or sick etc. If the child continues to be upset after you come in the room and still cries or is upset after you pick them up, then that is a good sign that something medical is wrong. When they are doing it strictly for attention or manipulation, they will jump and laugh when they see you come in becasue they are content, excited and not ill.
2) Establish a routine. Give bath--feed milk--read book--then bed. Keep the same order at the same times every night. Children need this routine and it gives them security, gives them control and comforts them. They know what to expect and are less likely to protest since it eventually just becomes a given "after mommy reads I go to bed". It just becomes automatic after a while. Continue the routine even after they do not cry anymore.
3) Do not let them cry it out for more than 30 minutes. If they do it for more than thirty, take them out of the room, sooth them in the other room, then put them to bed and start the last part of the routine all over again (read another book).
4) Do not walk into the room during those 30 minutes. This was so hard for me to do. My son cried so hard that he would gag and cough. But I knew it was manipulation because he would stop crying and start jumping and laughing as soon as he saw me come in the room. So I had to go downstairs so that the crying didn't rattle me.
5) Give your child a security object. I know that because of fear of SIDS it is not recommended to have any loose objects in the crib; but we found a stuffed animal that had no ribbons, outfits, buttons or other possible suffocating or choking hazards and it worked. The first night we let our son cry it out, after he finally fell asleep (after minutes)we did find him cuddled up to his security doggie and ever since!
We were fortunate it took only about 4 days until our son was putting himself to sleep. The first night 28 minutes, the second night about 15 or 18 the third night 5 minutes and the fourth night about 4 minutes.
I felt this was the right thing to do for us. We made sure that there was no medical or developmental reason our son needed us at night and then I discussed implementing the cry-it-out method with my husband so we were on the same page and then we stuck to the plan.
Having our son learn to sooth himself to sleep allowed us to go out at night and have a baby sitter. We knew that he would go to sleep and not give the sitter a hard time. I was also able to travel with my son and he would not keep everyone in the house up. We were able to put him to sleep upstairs while we had "adult" time with our friends downstairs.
Our son is 2.5 now and when we put him to bed at 8pm he does not get up or cry out for us until 6am the next day unless he is sick (usually ear ache or stomach bug). Most often he will sit in his bed and read or play until we come and get him.
Our 9 month old daughter on the other hand never had an issue with sleeping. We have always put her to bed wide awake and she just lulls herself to sleep! Although we gave her a security blanket to sleep with since she was 3 months old. Could that have been why?
I wish you much luck. Let me know how you make out!
R. Niles