How Many Cans Of Wet Food To Feed Kitten?

I have just got a kitten, who is about 6 weeks old. I have to feed her wet food every 2-3 hours during the day. I read on the bag that she needs around 8 cans (around 40g) of cat food per day. But what do other people usually give their cats? Is it alright if i only feed her around 4 cans (20g)? My cat does not seem to be hungry 🙂 Thanks in advance!