I have recently found this resource- Dr. Doug Lucas at Optimal Bone Health. He is an orthopedic surgeon who has transitioned his practice into prevention instead of treatment of bone fractures. He is on YouTube and has a good free masterclass. This video is on basic information for supplementation. youtube.com/watch?v=EbCkXck...
I have osteopenia and had been in steady decline for the last 6 years. The MD wanted me to start bisphosphonates, but I declined. I have been doing OsteoStrong for 2 years, yoga and supplementing and saw all 4 of my DEXA numbers improve. Trying to stay off the drugs!
I hope this information is helpful- there is a lot of information on the Optimal Bone Health website