My daughter was 15 months when we got ours, so I think I was in the same spot as you are. WE put it on her and held her in our lap. When she was okay with the actual vest, we hooked up the machine and turned it on low and only for like 2 minutes the first time. We worked up to the protocol over the course of about 3 days. She wasn't particularly interested in TV at the time, but we set her up in front of a TV with a baby einstein movie and did what we could to entertain her (sing, sway, clap hands, etc.). It was a good transistion, and then it became a fight, and then it got easier. Now she asks for it, buckles it herself and presses all the buttons herself. Its scary, but its such a good thing. Let us know how it goes.