I think so, I assume that Titanium Backup only works if you have root. I created a backup file on my G965-F, and was able to use the tar.gz to transfer the data to my SM-T510. Interestingly, Titanium Backup seemed to crash after reinstalling 96/400 books and I then discovered that if you simply placed the zip files in data/user/0/net.medhand.drcompanion/files/dwnl, the program then installed the book in question. This also happened to several books which weren't previously downloadable via the app, zips files at mega.nz.
https://mega.nz/file/0tBXlSyA#u2ut3qhn8jt8UfcP2XmQkdZGaQx51JdumFCIcDGbEccThe main problem I had is that it takes a lot of space and I haven't yet worked out how to put some of the books on the SD card.