5-6 hours of no wet diapers..

my 3months lo, 1.5months adjusted started sleeping through the night. we went out and got home q late so i think he is tired. usually he will wake up 2 times through the night. but he woke up and 5am today and only drink 80ml and his diapers are dry. is that okay that he did not pee through the night (5-6hours) ? generally he will have heavy wet diapers when awake. he drinks 110-130ml