How long will the treatment take when getting acupuncture for back pain?

Generally, when receiving acupuncture treatment for back pain

How long does the treatment period and treatment cycle usually take?

I often go on business trips and tend to finish work late on weekdays.

You can only receive treatment on Saturdays.

I wonder if there is an effect even if I receive treatment only once a week.

I'm also curious about how long the treatment period should be when I go for acupuncture only once a week.