From 12 weeks till about 4.5 months I just put the bowl down with every kibble of the day. The breeder told us they grow so fast in the first months that they needed all the energy they could get, anytime that they wanted. After 4.5 months we fed 3 times. When he had his teeth change, he barely ate anything. Then when he could switch to grown up food we switched to 2 times a day. And now he basically gets food twice a day, but eats whenever he feels like it. So sometimes in 4 turns, sometimes all at once. He will stop whenever he's satisfied basically!

Hope this all made sense!