Long naps ok?

My LO is 5 mo.

Goes to bed at 8:30-9

Nurses almost every 2 hours still.

Awake for the day @ 6

And naps at 8 for 2-3 hours

Then again at 2-3 until 5-5:30

Is this normal or ok. I always see people on here say their baby only naps for 45min.