I kind of was in that situation too - having to return to work - because the PT I had was making me feel better-
so dr thought I was"healed" -
but after going thru that similar cycle with neck/shoulder pains a few times already I knew it was a matter of time before I "broke' again.

That was when I got Sharon Butlers TOS program and during breaks and lunch and when I got home -I would do the postures & stretches.
I really think it helped me to stick it out for almost 3 months...
of course I would get home from work and do nothing else but try to recuperate for the next day.