Any work or hobby which you want to adopt needs constanticy and then it becomes a habit.
Daily doing a same things becomes a habit and this will also happen in reading the books
But maybe you should just lay a book somewhere you normally sit to chill or something, I think that might help with getting to the reading part
I don't think, just doing it like a robot. When I go to bed and prepare myself to go to sleep, I try to read some pages, even one page but at least a page read.
As far as I know myself, I realised that I would do exactly the same thing – go after some 'undone' tasks and waste this time forcing myself to do them, which happens to be even less efficient and more tiring. That's why I came up with a conclusion: whenever You feel like You're getting overwhelmed – take a minute for yourself. Get a few deep breaths, forget about the surroundings and if this doesn't help, those 5 minutes of reading won't kill You 🙂
What's more, I spend 15 minutes every morning (even put it in my morning routine) right after I wake up not to go through my phone, but to read a few pages. This way You can be more productive and You don't actually 'waste' much time 🙂 During that You can drink water and also keep up with your water habit.