None of us on the forum are experts in the science of freeze-dried vs. fresh nutrition. I know it is frustrating when a question goes unanswered, but often it means that the forum is not the right place for the question. If you are looking for suggestions to get a parrotlet to try new foods, I am sure many of us have tricks we have tried. But whether a particular diet is the right one for your parrotlet is something that should be answered by your avian vet, not an internet forum.