Felix has always co-slept in some form since he was newborn..

Firstly if you plan to do in the same bed co-sleeping I would recomend you get a queen or king sized bed, so you all the right amount of space..

Wen Felix was newborn we had a bassinette, hewould have his fist sleep in that and then would sleep with me in the early morning..

Doonas and balnkets need to be watched with young babies as they cannot move away..I would aways have Felix in a sleeping bag and on top of the doona and I would have him on my side of the bed and between basinette and me with a pilow to stop any gaps..

As they grow the rules chane or they did for us..

when he out grew the basinette we put the cot on the side of the bed with athe side rail off making sure there was no gaps to fall between. he would spend some of the night in the cot and most with us of both sides of me..

When he started rolling we lowered the cot and bought a side rail on the far side of the bed for when he was in there alone (before I went to bed) and he's sleep most of the night between us or on side was summer so no worries about blankets..

When he was crawling we found the easiest solution was to lower the bed so just the mattress was on the floor and he could safely move anywhere he wanted..this was really easy..we replaced the cot with a side mattress for extra room

Now he is 17 months and I on my own and I have the bed correct height using the side rail on his side..obviously with 3 in the bed you wouldn't have this luxury but it works for us!

Things you have to be conscious of are mving beds are side cot/mattress, so they don't fall in gaps..obviously bedding..now we both share the same doona, but under 6 mths a separate bedding worked well for us..

Felix is on nigt oxygen and currently the NG Tube pump at night and if we didn't co-sleep I would have to constantly check him for tangles and choking..it is something both DP and I enjoyed with him from birth..and if he stays with his Dad they will most likely co-sleep too

The media blacklisting of co-sleeping makes me upset as there are safe ways to co-sleep just as there are safe parctices for cot sleeping..for me it feel natural and enhanced our bond and breastfeeding experience..

HTH!