These 'reading slumps' happen at the worst of times, to the best of people, but they're nothing worth stressing over: it's perfectly natural for our interest in all things to wax and wane, often without any catalyst. I have four 'hobbies', I suppose, and I go through slumps with all of them: reading, knitting, miniature models and video games. Sometimes I go through a slump with all of them, at the same time! (It's usually then that I have my most thorough spring-cleans; what else am I going to do?)
I don't think that this is necessarily something that you need to 'do something' about, and it certainly isn't worthwhile calling yourself sick over it. Unless you need to read as part of your career, and you're struggling to find the will to do so, it really isn't a problem. These phases are natural. Find something else to occupy your time: I notice that you've said that you're not a 'watcher' (nor am I!), and that ready occupies 830pm - 900pm each day.
Would you consider listening to a podcast? There are plenty of interesting ones out there, both factual and fictional. I'm personally fond of history podcasts -- Dan Carlin's Hardcore History is
very entertaining and educating. If you want to do something with your hands and eyes, too, rather than merely sitting and existing (which can be very therapeutic!), have you considered needlework, scrapbooking or journalling? I've found them all very fun. Of course, as I earlier stated, I clean obsessively when I go through slumps that none of my hobbies can satisfy...
