If your doctor said to apply mupirocin on active lesions, then you could do that, and apply ivermectin paste on the rest of the face (including clean skin) in regions where lesions occured in the past and present. Avoid the area around your eyes and lips.
Since you already called out from work, you should take into caution that topical ivermectin can temporary increase the number and severity of active lesions. The severity and time that this happens differ from person to person. For some it’s mild, for some it’s not. But in the end, topical ivermectin has a high success rate.
You could also try to combine topical ivermectin with a moisturizer. (Soolantra also contains a moisturizer.) Like this one: https://www.amazon.com/Cetaphil-Moisturizing-Cream-Sensitive-Skin/dp/B01IA9DHJI/ Which is from the same company that also produces Soolantra. (Galderma Cetaphil.)
A moisturizer may give the skin a bit of extra protection.