A Tale of Two Collections

I've been asked a few times how I am managing two unique collections. Honestly, I don't have a solid answer yet. Here's what I've learned so far:

1. Pull reports for both campuses and compare notes. I have found that some things are circulating well at campus one, but not at all on campus two. As such, I've started trading books. I check both my collections first to see if there is a need the book could fill, and if not, I email colleagues to see if they need an extra or a replacement copy of a book. Currently, I have twelve copies of Invisible by Christina Diaz Gonzalez at campus two... and they're still just sitting there despite having several classes come in for check out. A colleague is borrowing them and then I will send some to my other campus and ask others if they would like an extra copy.
2. I have a Google Sheets buy list where I make notes--I specifically note if the author is a person of color, if the book is less than 250 pages, publication year, and any notes I might have. I also have a column for which campus I plan to buy for (blue for one campus, red for the other, purple for both).
• The most important pieces here are the length, publishing year, and if the author reflects the diversity of my campus
• I also have an Amazon wish list for each campus where I add books that get a lot of wear and tear (DOAWK, Amulet) and makerspace supplies. I've been adding the singleton books for the second campus when I see a need for them (i.e. today is September 11, and I realized I don't have any copies of Jewell Parker Rhodes' Towers Falling at my second campus and would have done a book talk with it if I had it).
3. The new to me campus needs to be weeded--there are multiple copies of books that just aren't circulating. I know that in the past, it was typical to purchase multiple copies of award winner books, but that isn't something I do unless the book is popular (i.e. Amari & the Night brothers)
• When weeding, I personally advise doing so in waves. I weeded my campus one's nonfiction collection over the course of last school year. I probably should have done it in waves over several years, as my collection on that campus has shrunk considerably and at my current budget, it will take me a very long time to replace those books. You live and you learn!

Another aspect that I am still debating over is figuring out what will be popular so that I can purchase accordingly. I find it really interesting that the nonfiction graphic novels don't circulate as well on campus one as on two--I wonder if it comes down to how they are displayed. Since the graphic novel collection is smaller, there are a lot of front facing titles. I don't have the same type of shelves on both campuses, but I feel like that does play a big part in what is and isn't circulating.

Another thing is that my clerk at campus two had the nonfiction and fiction graphic novels separated, which I have not changed. I wonder if that influences circulation as well.