I own one of said hard collars from my cervical fusion last summer. I had to wear it twelve weeks.... hence, the 3 month delimiter doc has shared with you. It really isn't so bad once you get the drill. One thing, ask for a change out on the foam inserts which make it tolerable, because after a while and soil despite washing, they will begin to SMELL....... and I promise you will be up close and personal with that odor.

Prayers are yours my friend,
Sorry this may well be your lot,
Prayin,