OK. So, if you have six Taylors and you change strings on each one 3 times a year, that's 18 string changes. 365 divided by 18 is a string change every 20 days, on average. Unless you play every day, I think that's a lot. Maybe others will disagree with me.
I use D'Adarrios too, and probably play around two hours, two to three times a week. But I don't have to change strings every 20 days.