If I washed my hands and did the morning blessing although later I went to sleep for like a couple hours 3-4 maybe less do I have to say the morning blessing of washing hands again after I wake up?
Although one washes his hands each time he awakens from a substantial sleep, he only says the blessing of al netillat yadayim once.
This is certainly true if he has a nap during the day (Shulchan Aruch Orach Chaim 4:15).
What about if one arises early (before dawn) washes his hands and says the blessing, and then goes back to sleep while it is still dark? In such a case, Mishnah Berurah 4:32 rules that although he must wash again when he wakes up a second time, he does not say the blessing again.