I can only comment on my cancer which is the same secoundary bone cancer from lung cancer i was given 12 months without treatment and 18 with that said i had the chemo

only for my families sake it was a long hard winter last year for me.ive had 3x 3 month cat scans and my cancer is stable not doing anything i live life day to day happy i guess and long may it last the mind needs stimulating tinker with things of interest cars computers whatever light exercise very light if you fracture a bone it cant be repaired.i have the biggest concentration in the pelvis it made a hole in my upper right fema i have 2 deposits in my neck and in my right colar bone and shoulder i sleep and rest when my body tells me too and i just enjoy doing whatever takes my fancy that day that could eevn be to read a book .i hope your dad manages a happy routine that keeps him smileing and dont worry about time no one knows they are just best guesses.even my oncologist said ive told paitents 12 months and 4 years later he,s still seeing them good luck and chin up all my love and best wishes to your dad and family.