Hey there, Spoonary. Long time reader and fan here, despite my lack of presence in your log.
I did not realise how similar our language learning paths were, so reading about what really got you started was very enlightening, and somehow contemporaneously exciting. I can see how it can be easy to put English to one side, oddly, despite all the stigma the English language receives on this website, it really isn't presented as having even a semblance of importance in England, for example. Even at college and degree level, it's never really expressed that English is actually quite pleasant. We are often made to feel guilty for liking it, I mean, there are numerous threads on this forum, that by now I will not even open. I will see by the title how particular members will be drawn to them and express how evil English is.
Anyway, my main reason for posting here: You can treat English equally as you would your other languages. Time management is always a bit "eww", but just like you would split your time between Spanish, Italian, German, etc. You could just treat it as any of the other languages you study and allot your time accordingly. I initially felt quite silly for doing so, as, like you, and despite my current abysmal level of writing, I studied English to the upper levels - but for a few years now I have been subscribed to various "word of the day" sites for English. Merriam Webster is a particularly good example. Do I see a lot of words I already know? Of course. However, I do get to see a lot of words in the bottom 20% or so, and examples of usage, etc. that I would otherwise never see? Hell yes.
I also write a lot of aphorisms as anyone unfortunate enough to have me as a friend on Facebook can likely attest to. I do so in such a way to include any newly acquired vocabulary or any that I feel I do not use often enough.
Quiz shows are immensely enjoyable to me and although I watch a few in other languages, nothing quite compares to the likes of 8 out of 10 cats does countdown, or would I lie to you. I mention these as you expressed your love of comedy, here you get the perfect mix of both. Okay, would I lie to you fails on the educational front, but hey, Rob Brydon and David Mitchell. 8 out of 10 cats, although not entirely "educational" does still come up with the odd interesting word from dictionary corner, and conundrums are a lot of fun for thinking on your feet to retrieve those words. I am also a bit of a sucker for university challenge and frequently attempt to keep my knowledge from stagnating. There are some great Youtube channels such as Crashcourse, which If you watch the English literature course, it's actually designed and presented by John Green, the guy that wrote "The fault in our stars". If you also have a penchant for medical jargon, then channels such as Khanacademy and the accompanying website, which uses the Youtube videos anyway, would be another perfect way to make sure you are encountering that particular lexis.
I do not remember if you have a Kindle or similar device, but even without one can create a Kindle account and use it on a mobile device. The great thing there is that the classics are often ridiculously cheap. With the classics I do love to have a hard copy for display purposes if nothing else, they are usually so nicely bound. However, with complete works by some of the literary giants barely costing a pound in some cases, it would almost be remiss not to purchase these.
I did have a point somewhere, which I'll go with as being, the sacrifice need not be quite as big as you are potentially thinking it to be. I fit all of these little snippets in over the week and still have ample time to fit my other languages in. Granted, you are much busier than I, but you manage with your current languages.
I am also not so secretly hoping you continue your German. Although I am not very vocal, in as vocal as one can be through the medium of text, I always frequent the German logs on here and am always cheering alongside those that are on that particular journey.
Anywho, I wish you all the best with all of your languages.