I gave up on updating Subetalodge when I hit 1000 items fed.
First I create a wishlist category for Food, and set it as default. Then I go to my pet's dropdown and click on "Food pet has eaten" . On the Foods Eaten page, next to where it says how many foods your pet has eaten, I click on the "Click here to see what's missing!" then I wishlist everything. This will take some time the first time you do it, but it's easy to keep up with after that.
You can choose "User price" to sort the wishlist by, and find lots of cheap foods to feed. Even at 9026 different foods fed I still have items under 10k available to buy.

... this is also an idea... but sorting the wl often does not work properly... i wrote to the lodge admin and she updated my lodge... i had not seen the page count and it was missing 3 of them.... nevertheless, to get the border, we have to give almost everything to feed and read almost all the books... it's not worth it to me and it also takes forever if you have to do everything individually... QAT would have been nicer... i like to play the team...

Blue: 0 / 5 Carl: 15 / 15 Cinthia: 15 / 15 Cursed: 15 / 15 Library: 15 / 15 Maleria: 15 / 15 Pete: 15 / 15 Quentin: 15 / 15 Sarah: 0 / 15 Saggitarius: 0 / 15 Wizard: 1 / 15 Battle: 0 / 30 Major Drills: 0 / 30 Shinwa: Completed!

Blue: 5 / 5 Cinthia: 15 / 15 Cursed: 15 / 15 Library: 15 / 15 Maleria: 15 / 15 Quentin: 15 / 15 Saggitarius: 15 / 15 Wizard: 15 / 15, last one for me. Thank you all for meet here, Chat chapchap and cool Smalltalk 😄

Blue: 5 / 5 Carl: 15 / 15 Cinthia: 15 / 15 Cursed: 15 / 15 Library: 15 / 15 Maleria: 15 / 15 Pete: 15 / 15 Quentin: 15 / 15 Sarah: 15 / 15 Saggitarius: 15 / 15 Wizard: 15 / 15 Battle: 0 / 30 Major Drills: 0 / 30 Shinwa: Completed!

Blue: 0 / 5 Carl: 15 / 15 Cinthia: 15 / 15 Cursed: 15 / 15 Library: 15 / 15 Maleria: 15 / 15 Pete: 15 / 15 Quentin: 15 / 15 Sarah: 0 / 15 Saggitarius: 10 / 15 Wizard: 1 / 15 Battle: 0 / 30 Major Drills: 0 / 30 Shinwa: Completed!

= Thanks so much for making this thread. :)

Well two more days of fun :D Blue: 5 / 5 Carl: 15 / 15 Cinthia: 15 / 15 Cursed: 15 / 15 Library: 15 / 15 Maleria: 15 / 15 Pete: 15 / 15 Quentin: 15 / 15 Sarah: 15 / 15 Saggitarius: 15 / 15 Wizard: 15 / 15 Battle: 26 / 30 Major Drills: 0 / 30 Shinwa: Completed!

I'm gonna keep on posting until this is officially over. Two more days of books!!! Come on books!!

Blue: 0 / 5 Carl: 15 / 15 Cinthia: 15 / 15 Cursed: 15 / 15 Library: 15 / 15 Maleria: 15 / 15 Pete: 15 / 15 Quentin: 15 / 15 Sarah: 0 / 15 Saggitarius: 0 / 15 Wizard: 0 / 15 Battle: 0 / 30 Major Drills: 0 / 30 Shinwa: Completed!