I wouldn't be in a hurry to do it yet. 3 months seems awfully young, but I know each child and each situation are different and you know what's best for your baby. I hadn't intended to do it at all, but by 7 months, the sleeplessness was affecting all 3 of us and our marriage. Something had to change. Plus, as a parent, you know your child, and we could tell she was ready. The first night was hard, but not near as bad as I thought it would be. I had the most trouble with the fact that for weeks and weeks she would cry for every single nap and bedtime. Its very very draining and makes you question your commitment. Just be prepared for that feeling. But now, she's 10 months and sleeping 12 hours with 1 feeding at 3:30am. Its definitely much better now, but she still cries sometimes. We are learning which cries are her "go to sleep cries" and which ones mean she really needs something. You'll get there, I know its hard. But 3 months really does seem early to me. Good luck! you are a great mom!!!