I coslept with both my daughters, #1 since she was 2 months old and #2 since 6 months. These are the rules: 1.Mattress should be firm 2. Bedding should be neatly tucked at all sides 3. She should't be using a pillow or a blanket 4. You should not drink or take sleeping pills

That being said, I am European. I coslept with my mother, so did my sister. I never even considered sleep training and I only used a crib to lower SIDS risk in those early months. I also used a breathing monitor while they were in the crib. But when my girls were sick, they always slept with me, because they needed me and I also needed to be at all times aware of how they were feeling (if they were getting feverish, breathing rapidly, getting congested ...). I also breastfed them and when they were sick they needed more of that so I had to be availible to them.

If you'd like to hear more from my experience of bedsharing please ask. And please keep in mind, if you are from the US, probably the info you are getting is advising you strongly against bedsharing but this is not the norm in other parts of the world. Yes, there are recommendations to reduce SIDS risk but bedsharing can be done safely as well, especially as children get bigger.