Hi @steeldove, I don't have any experience with tinctures but I think Chris @artscaping may have some suggestions to share with you. I did find this information but I'm not sure how reliable it is...

Cannabis tinctures 101: How to make, consume, and dose them: https://www.leafly.com/news/cannabis-101/cannabis-tinctures-101-what-are-they-how-to-make-them-and-how-to