Dexa scan scores and Ibandronate prescription?

Hi,
Recent bone density test results led my gynecologist to prescribe Ibandronate (Boniva) for a pre-osteoporosis condition, and told to take it for three years.

Results were:
Lumbar spine: -0.7 with a 2.6% decrease since test in 2019
left hip: -2.0 with a 8.8% decrease since 2019
Femoral neck: -1.9
10 year risk for hip fracture 1.7% and 10 year risk for major osteoporosis fracture 10%.

I am 5'2" and small boned and am concerned about the side effects, and also wondered if a referral to PT or OT or a dietitian to restore bones might have been an option other than a scrip. I average 8000 steps a day over month and am willing to make lifestyle changes rather than taking a med. Requested a second opinion and my doc did not think it was warranted. Suggestions?

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