ANSWER:

This is a Sunnah and it is not mandatory and it is only for few minutes to break the cycle. If one can’t do it before or after thuhr, no need to do it some other time. 

Sheikh i read somewhere taking nap in mid day is sunnah bcx satan don’t sleep in mid day… The timing for mid day is starting of duhr till the adhaan of asr? That is 12:30-3:40? One can sleep till asr? Please sheikh clarify me i sleep immediate after duhr but its hard for me to fall sleep and i get sleep late woke up at 5:00pm