Hey, so my 20 month old ds appears to be dropping his nap
he just won't go to sleep? He's never been easy to get to sleep but this past week almost nothing has worked, bed, car, pushchair, sling, sofa.
He's tired all afternoon as a result, but will have periods of being very active and then sleepy, but trying to get him to nap just makes him cross or wakes him up 
What do I do?