The vet's advice worked like a charm! She's eating pellets now!
I went to see a vet last week, and in addition to treating my budgie, he also provided some wonderful advice on how to get her to eat different foods (she's a seed junkie). Here's what he told me to do and it worked better than I thought it would.
First I placed a bunch of seeds (the typical stuff she eats) on a paper towel on the ground and brought her to that area. I put my thumb and index finger together so I can pinch and grab the seeds, and I curled my other fingers up into a makeshift bowl to toss the seeds into after grabbing them. I also rolled my fingers back and forth a bit once I grabbed the seeds, to simulate eating. The vet said it would be especially good if I rubbed my fingernails against each other to simulate the clicking sound of a bird's beak when they eat seeds.
I was so amazed at how quickly my budgie started paying attention to what I was doing and promptly went closer to dine on the seeds along with me. I did this only once during the day and I did it for about 10-20 minutes.
After the 3rd day, I used fruit blend pellets instead of seed, repeating the steps. I wasn't particularly optimistic because I've never gotten her to eat pellets. But after just a couple minutes she started poking at the pellets with her beak, and after a few more minutes she was eating them! I was so happy!
Yay! I'm so glad your budgie tried pellets. Thank you so much for the tip. I've been trying to get my birds to stop eating so much seed by mixing the pellets in. Some of them actually get eaten, but a lot of them end up on my floor. I'm definitely going to try this out!
I'm glad to see this isn't a particularly common method for getting budgies to try new food. I had also never heard of this method before, though I can't say I did too much research into it. so hopefully it might help some other owners with their "seed junkies".
I'll probably move on to things like broccoli or apple bits once she's accustomed to the pellets. But I think the real test will be seeing if she'll eat these foods by herself.