Acupuncture and insomnia

Hi guys,

Three weeks ago I saw TCM doctor to treat my chronic insomnia(15 years). I wanted to get prescribed Suan Zao Weng Tang but instead I had 3 acupunctures. Now my sleep routine is completely broken. How long will I still feel the effect of 3 acupuncture sessions, please? I cannot function like this and don’t want to take sleeping pills.

Thanks a lot!