First of all, thanks for all the helpful advice and information. I think as far as extensive reading goes, I will first finish with what I'm intensively reading now, and when I begin my next series of novels in German, I'll switch to extensive reading. I'm fairly convinced at this point that it's the right way forward for advanced learning and there seems to be a lot speaking for it so I'll have faith in the method (although it indeed seems somewhat counter-intuitive). Furthermore, I can see it being a relief to read
far away from any dictionary and instead focus on enjoying the story as I would in my native language (which is English, iguanamon, sorry that wasn't clear in my profile, it's fixed now). Not to mention I can understand about 99% of individual words in a typical novel with limited guesswork.
I'll take a pen and paper along at first and try to make an effort not to jot anything down unless it isn't guessable (I wouldn't mind having just 10 or 20 words to look up afterwards), but I may stop if it gets out of hand. However, I will still set aside non-fiction, which I do online, for intensive reading since that's based on short articles and complete comprehension is more necessary.
Thanks to iguanamon for the tip to take advantage of writing prompts, this is what I was looking for and if I ever start a language log I'll consider using that as another writing opportunity as well.
Welcome to the forum, TrioLinguist!
Thank you! I look forward to becoming part of the community.