Sounds a lot like me recently; also juggling a thesis, internship, research, etc. Ever since the holidays winded down, I've kind of psyched myself out of being able to focus on a given task for a set period of time; knowing that the remainder of the winter before I start teaching again is a fairly opportune time to make a dent in a least a few things.
Having WiFi issues at my place for the past week has also been a frustrating factor that certainly hasn't helped mitigate this tendency. I've ended up rationalizing focusing on non-grad school related tasks that I'd been meaning to get around to, during the wifi down-time, since the idea of working on data analysis or writing and then needing to look something up, but not being able to throws a wrench in any motivation I otherwise would have had. Internet's fixed, but it feels real bad losing this precious time during winter with classes starting back up fairly soon after MLK Jr. Day.
Not looking forward to upcoming meetings and sharing my underwhelming, lack of substantial updates.