The sunny side of thyroid/trachea cancer?

My total thyroidectomy was October 2024. Because the cancer was wrapped around my trachea, I had 35 radiation treatments with 6 chemotherapy "boosters ".
That treatment was successful. Follow up scans show no active cells. (Sloan Kettering)
All good. And next....
My cholesterol has always been "abnormal " , whether I was too heavy or lost weight.
Now, nine months after treatment, my blood tests show all cholesterol levels very good. Must have been the 3 months on Kate Farms liquid diet.
I am working very hard to keep my weight healthy (not gain).