That's what I do. I run my main only thru the week. Just my dailies, duo, and alerts. Weekends I run my main and a couple of alts thru the maps that I needed catalysts from. Just started all this after Xmas, cause I was on a little fortnite break. My main and alts artifacts are all around the same level. At the same time, like my other post. Not everyone has the same weekends as us Monday thru Friday, 8 to 5 workers. Putting some catalysts in solo content isn't going to hurt anyone.