Congrats on 2 years! That is HUGE! And on your weight as well! Nice job!
I think if you're coming here to ask if you need to do the 90 days, then you should probably do the 90 days. We all know how fragile this stuff can be and I would always rather be safe than sorry. I would hope that your work will understand that you're trying to better yourself and end up a healthier, happier, more responsible person, but I would rather lose my job and stay alive than keep my job and potentially relapse. You never know what you could learn in 90 days that could save you one day when you're struggling!