Our vet has recommended our 4 year old cockatiel be put on a pellet diet, she gave us Harrison's high potency super fine pellets, and we're trying to convert her. She gets her seed cup 30 mins at nite and in the morning, cutting back 5 minutes each day until no seeds at all. She's not interested at all in the pellets, have tried a few tricks I read online but no luck. Any advice?