Just tried this on my newborn and it seemed to work! I know there are folks saying this isn’t a new finding but i find the timings really helpful. Previously I was walking the baby too long which was wearing me out but having research based timing advise helps a lot.
I'm pretty sure our 4 day old will react exactly the same way to this as he does when we put him into the next to me cot straight after a feed. Which is to say he'll sleep for 2-5 minutes, realise he's further away from the breast than he wanted to be and wake up.
What works for us and our previous child is cosleeping. After I saw both my partner and our eldest fall asleep simultaneously after finishing a feed I became a convert.
When controlled for alcohol and drug use it's actually pretty a pretty insignificant risk. 50% of families admit to cosleeping in the UK, I suspect that's likely to suffer significant under reporting.
I think it's far better to do it deliberately, knowing where the baby is and deliberately positioning to avoid the possibility of rolling towards them, than to do it via exhaustion at 4am.
And our 3 year old coslept until 6 months and has slept 8pm to 8am in her own bed ever since so if that's counter productive I'll take it.
We noticed the same thing with my first 2 kids. They’d wake up from a dead sleep after putting them down. Once my second child was 3-4 months old we would let him cry for about 1 minute and found he usually went to back to sleep. Worked well. With my first we would run in immediately and I still think she has going to sleep issues.
