Question about standing during ALIF recovery

I am 1 week post-op from ALIF at L5S1. Recovery is going fantastic. I'm (nearly) off my Rx pain pills, sleeping well enough, and the pain at the incision site has gone way down.

My doctor advised me that between the surgery and my followup (1 week from now), I should be doing nothing but sitting up, punctuated by walking every hour. I have been doing that, and am up to walking 10 minutes out of every 60 (which sums up to more than 10k steps a day).

My question is, should I incorporate standing in addition to my walking, if it's tolerable?