Nap Training Advice! Help!

Noon • Tue, Nov 28

My almost 10 month old son gets up about 4 times a night. My Dr said he is not napping enough during the day and he is overtired at night. He takes an hour morning nap the anywhere from 20-40 min nap in the afternoon. Any advice on getting better naps? I was told at least 3hrs of nap time a day.