Sorry this link is so long!
health.clevelandclinic.org/can-drinking-too-much-milk-make-your-bones-more-brittle/#:~:text=A%20Swedish%20study%20suggests%20that,of%20fracture%20and%20hip%20fracture.
Information about dairy products as a source of calcium is rather contradictory. I had read some years ago about a long term study in US about milk drinking and osteoporosis - that study suggested that milk was not very helpful.
The article linked to above suggests "Make sure you’re eating an adequate amount of calcium by including cheese, yogurt, greens (collards, kale), soybeans, figs, broccoli, oranges, sardines and salmon (with bones) and many fortified foods into your food rotation."
I was surprised when I found my bones weren't great some years ago when I signed up for a study on the effect of exercise on bone health. When I was younger, I drank a lot of milk and took plenty of exercise. But I preferred swimming and cycling to weight bearing exercise, so it didn't do me much good. However, after a year of the exercise programme - weights, jumping with straight legs and various other quite strenuous stuff, my bones did improve, without any drugs or supplements. But most participants in the study dropped out as their bodies weren't able for the kind of exercise needed to help bones!