The Internet Archive has opened up its library until the end of June. Waiting restrictions for books have currently been suspended.

Announcing a National Emergency Library to Provide Digitized Books to Students and the Public - Internet Archive Blogs
To address our unprecedented global and immediate need for access to reading and research materials, as of today, March 24, 2020, the Internet Archive will suspend waitlists for the 1.4 million (and growing) books in our lending library by creating a National Emergency Library to serve the...
blog.archive.org

National Emergency Library - Internet Archive Blogs
The National Emergency Library was a temporary collection of books that supported emergency remote teaching, research activities, independent scholarship, and intellectual stimulation while universities, schools, training centers, and libraries were closed due to COVID-19. The National Emergency...
archive.org