Lefty is 5 1/2 monthe old now and I want to go from 3 meals a day to 2. He will still get the same amount of cups but divided into 2 instead of 3 times. Is this too early or should I wait until he is 6 months or older?

I think that would be fine. All you can do is give it a try and see how he does on 2 meals vs. 3.

Yeap thats just fine , I changed Peanut with 5 month from puppy to adult and from 3 times to 2 times a day. Still he has his treats and fruits in between. Can't let them starve to death (lol)