resting tremor trembling or shaking in limbs

Patient CB
Age: 80 years old
3  weeks ago, she started not being able to sleep well all night. She woke up with violent shaking movements with both arms and legs. She even was afraid of going to sleep.
She has no hypertension and diabetes. Blood pressure 105/70 and sugar level was normal at her doctor office.

My impression is she may have early stage of Parkinson's disease, the resting tremor. Her son asked how many treatments need to have some improvement. I told her she needs around 10 visits. However, her condition improved greatly within 4 visits.

After her first visit, she woke up only once instead of regular 5 to 6 times.
The next day I did acupuncture on her. She slept well with 6 hours without interruption. She then started woke up in the nights following. However, she just woke up. Her hands and legs did not shake.
After the third treatment, she can sleep well without shaking at night.