You’re not alone – there was a recent related discussion: https://www.uphillathlete.com/forums/topic/am-i-training-at-work/
From Scott J.:
If you have any times during the day when you can get off your feet, elevate your legs, even for 10 min at a time this can help a lot. That and more active recovery like foam rolling and stretching. Can you get up extra early and do some training a few days a week before work. It’s easier to work with tired legs than to train after along hard day.