[Maximo]

Welcome to Yorkie Talk. I do not have experience with a hyper dog, but I had a neighbor with a hyper, tiny Yorkie, so I understand your dilemma.

Does Bella like walks? Maybe try draining some of her energy with a long walk first (when the weather is conducive to being outdoors)? Using high value rewards and loads of patience may help too.

Since Bella is already high energy, keep your voice and demeanor really low key when training. You know how people often use high voices to try to excite a dog? Use a low, even voice.

Clicker training might be something that works better for Bella.

Also work on building a daily routine. Having a schedule of daily activities, doing things around the same time each day, including brief training sessions, may have a calming influence.