Sleeping in third trimester!

Omg I keep sleeping, me & baby. When he's sleeping it's like I'm sleepy. I get so sleepy during the day I have no control on how to stay up , & once I nap I can't even wake up. It feels like my body is so overworked today I woke up at 11am & went back to sleep at 1 & it's now 4 & he's up kicking . I hear that we have to get as much sleep as possible , but seriously napping every day?? 4-5 hours a day is crazy . I fight with myself to stay up some days.