I have two that are certified. Never planned on it either. Midnite came to me completely dog reactive and I worked with him nonstop for several months. We went to a local dog event and it was in my eyes his final test on reactivity. He did really well and a group was there giving CGC tests. I figured what the heck and he passed with flying colors. They approached me and asked if I would consider the therapy dog test. I wasn't to sure because dog after dog was not making it and he never had any training for it, I only had him for about 4 months at that point. They kind of pushed it so I agreed. He passed with flying colors. They were impressed with him. Only a handful of dogs made it that day. He didn't know any of the dogs or people, tons of people, dogs barking, every distraction you can imagine.
I'm sure you will be fine. Just stay focused and don't be nervous. It worked well for me because I had no clue what the test was. Good Luck.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD