can you delete old saves
Yes, save file locations:
Windows: C:/users/(username)/AppData/Local/UserData/Default/Lust Doll Plus
Mac: /Users/(username)/Library/Application Support/Default/Lust Doll Plus
Linux: /Users/(username)/.config/KADOKAWA/RPGMV/Default/Lust Doll Plus
(May need to sudo nautilus if you don't have access to .config)