DS2 will settle for a nap fine in his cot (maybe a bit of a grumble) and then ping awake with an awful panicky cry after 20 mins. I thought it was because he was overtired but he seems to do it all the time, even when I think he's well rested. (DS1 used to wake after 40 mins and I thought that was bad!)
I have tried letting him cry it out several times and it just hasn't worked. Sometimes eg: in pushchair or especially car he will open his eyes wide then go back off. In the sling I walk around when he stirs after 20 mins to get him back off.
He's a good night sleeper - put down awake, grumbles then self settles. Occasionally wakes 40 mins later screaming/crying but settles himself back after a minute-ish. Why can't he do this in the day? He will be full time at the childminders in 8 weeks so I would really appreciate some ideas