Treatment to fix biological width violation for 6 crowns

I had crowns on my front 6 teeth 3 years ago due to root canals and aesthetics. 1.5 years ago, my gums swelled and bled. A periodontist fixed them with crown lengthening, but now they're swollen again. The periodontist suggests replacing the bulky crowns to fully resolve the issue. I'm worried about my in-person sales job and wonder if the treatment will require prolonged time off