I've never done anything special, other than all the recommendations like don't use a duvet or heavy quilt, I don't wear very loose clothing. All my babies have slept right up against me since they were born (near the 24 hr milk bar ). I've always been surprised how aware of them I am, even in my sleep. If I'm super tired, I get DH to be the one that is close to them for the first part of the night and then I take over at the first feed.