At 31 you are young but 8 years is a long time for both hips. If you have had an orthopedic surgeon write up a recommendation for a hip replacement I think for insurance purposes you don't have to try alternative procedures, treatments or therapies.
But, If you still have adequate spacing between your acetabular cup and femoral head I would search for doctors performing a newer treatments. In the past 2 years BCBS began covering surgery for autologous chondrocyte implants in shoulders and knees, in english those are your own cartilage cells that are cultured and stitched in to repair.
https://www.fepblue.org/-/media/PDFs/Medical%20Policies/07-10-2020/70148%20Autologous%20Chondrocyte%20Implantation.pdf maybe they will allow for hips.
I don't know anyone that has had this procedure, my brother sought it out for his shoulder, he ended up having a rotator cuff surgery.
But Maybe your condition lends itself better to hip resurfacing as both of your hips have issues.
I found that doctors will post anything on their websites to drive appointments to them. I don't want to pay any doctor for a job interview consult. So, if you find a doctor who may mentions chondrocyte implants on their website, I would email them, ask their staff if they have done the procedure in the last month or two to find out if they regularly perform the procedure.
I have been down the path of cortisone shots, synvisc, double spin prp, and was too far gone for autologous stem cells (Dr Don Buford, Dallas Tx honest man) without great outcomes.
But you are at the right place to find hip resurfacing surgeons with many years experience, and some of them can produce years of data showing great outcomes.