You can feed him two or three times per day, but make it tiny meals.
This is what I would do, feed your lion a few meals throughout the day on feeding day, but not feed again for the next 2 days or so. This way you are not overfeeding and your lion is getting enough food. Two of mine will grab smaller chunks every time I feed.
Feed your lion just until you see a slight bulge in the stomach area, this way you do not overfeed.
Kaye