guinea pigs generally sleep during the day and are up on and off during the night. When we go to sleep we give cujo some lettuce and give him his box and he is in and out of it all night long. During the day he naps and eats off and on too. I'm sure that your gp is fine. Educate yourself as much as you can about guinea pigs. There is alot of info on the internet. You will get lots of love and affection from yours as long as you keep it healthy and give it lots of attention.