New to osteoporosis and overwhelmed

Hello, I am new to this forum. I was diagnosed with osteoporosis 2 weeks ago. Lumbar spine T-score -2.9; Left Total Hip T-score -3.2; Left Femoral Neck T-score -3.3. I am 58, female, technically met the criteria for menopause just this year (August 2023), 5'6", 125 lbs. I exercise regularly (mostly hiking and walking, some Pilates Reformers, bands, exercises from PT to strengthen my knees and butt), eat healthy (Ca level 9.4, Vit D level 25), get plenty of sun. Mom is 83 and still in osteopenia. She had a compression fracture at 78 when putting a 55 lb suitcase onto a scale. One maternal aunt broke her hip at 60 when she was transferring a pot of stew. She had leukemia and died at 65. Additional risk factors include small (wrist) bones and Asian. All preliminary blood tests to rule out other causes came back neg (TSH, PTH, some autoimmune markers, etc.). When I requested a bone density scan my primary doc at first said I'm not 65 and I'd just reached menopause, but after I shared my family history concerns she approved. So the T-scores really came as a huge shock. Had my first appt with my primary doc last week. After 5 questions, she decided to refer me to an endocrinologist who is also a bone specialist. I will be seeing her in 10 days. I'm trying to educated myself on osteoporosis and there is so much (conflicting) information out there I feel really overwhelmed. I am so glad to have stumbled across this forum and find the discussions very interesting and informational. At this moment, I have hundreds of questions but I would like to start with a few.
1. How common is someone with my profile getting the kind of T-scores I got? My primary doc said "not uncommon". My OB/GYN said "it's pretty rare" based on her patient panel. During the holiday get-togethers I saw many female friends and relatives who are much older +/- have been in menopause much much longer +/- very sedentary and they are not at my level of osteoporosis. What are your observations in your life circles?
2. Is it reasonable to request a repeat of the Dexa Scan before I embark on a life long journey of drug therapy? Anyone with flawed Dexa Scan results?
3. I'm told my T-scores are bad, but I'm having a hard time understanding how bad and what that translates into in real life. The only thing I could find was T-scores less than -2.5 you have osteoporosis. My daughter just got married in July. Does that mean I shouldn't bend over and pick up my future grandkids once they reach 10 lbs? 20lbs? 30lbs? Should I not pick up a 20 lb watermelon from the pit at Costco? Should I switch out all my cast iron pots and pans? I get the sense that I need to be mindful of my activities from now on to prevent fractures but how careful is careful enough? Thank you for any input.