I'm also reading quite a bit of such texts (in my case more arthistorical/humanistic ones, but also archaeological ones at times), when I read some novels, I like to lie down in bed, I still have my phone or ipad at my side to occassionally look things up (also I'm surrounded by my physical hand-library which I only rarely consult), you don't have to completely switch off, but you neither need to look everyhting up either, or maybe even shut down your internet router alltogether and just read in the late evening.