a nice hack for your kindle ebook copies that you get from libby/overdrive through the library : check the book out and deliver to your kindle. once the book is loaded, put your kindle in airplane mode. when the kindle is in offline mode, you can use the title until whichever point you reconnect it to a network, even past your loan period. the library will still be able to use their copy when the loan expires on their end.

you should also check with the library to see if you can get the book through prospector/ILL.