kids always wake a lot when they have colds. make sure you put tissues and a bottle of water next to the bed and try to teach him how to use them, just in case. saline drops several times a day have been proven to help kill bacteria in and clear the sinus passages; maybe that will also help clear him up. about general number of hours to sleep, my 3 year old has never slept 12 hours in his whole life. he used to sleep about 8.5 at night with a 1 hour nap or so...we dropped the nap right around his birthday. at first he needed tiny afternoon naps, about 20 minutes, to keep him going til bedtime. now he generally doesn't nap if he sleeps about 9.5 at night. 10 if we are realllly lucky. most kids need more but practitioners say 10-12 hours a day at this age is normative.