I’m very sorry to hear you don’t have a choice.
I strongly suggest that when you are home you do as little as possible. Rest, ice and elevate as much as you can when you’re not at work. Elevate all night. Don’t look at it like you’re doing nothing, look at it as giving your knee the best opportunity in which to heal.
Let your going to work be your only PT. You will get all the movement your knee needs in the activities it takes to get ready to go, get there, work, and get home again. You will not need reps of exercise at this early date on top of getting through your work week. If you want to you can always go to PT later, after you’ve recovered and healed and regained your strength, to fine tune anything you want.
It’s not exercising that gets our range of motion back, it’s Time:
Time to recover.
Time for pain and swelling to settle.
Time to heal.
Our range of motion is right there all
along just waiting for that to happen so it can show itself.
In the general run of things, it doesn't need to be fought for, worked hard for or worried about. It will happen. Exercise as in strength training is counter-productive and in the early weeks does more harm than good. Normal activity is the key to success.
Consider having groceries delivered, or at least order online and just go pick them up. Lots of stores are doing that now.
Please be careful. It truly is not in your best interest to go back to work in the present condition you are in. You really must take care of your knee when you are not at work, so you can have a good outcome.