At some point I realized why the fuck should I do all these research when they don't affect the story at all. I think to myself, "does it really matter if I find out how hard a gorilla can punch if the effect of 'it could punch really hard' is conveyed enough?" Of course, if it's regarding social context or basic information, I'd put it into the story, but sometimes, over indulging in unimportant realism could potentially drag your focus somewhere else unimportant.
That is, if you're doing a story like mine. I take more inspiration from stories like Baki, in which the only realism that matters are the one that directly influence the plot and goes with the themes of the story. In other words, there's a guy in the story who can physically digest bones and eats 30 steaks in one sitting. That's horrifically unrealistic. But, since the story's focus is on fighting, his style and punches make actual sense. It's all about where to do your research, not make it as realistic as possible.
Remember that you're doing a fantasy story. If it carries the plot has enough realism to bring a degree of believability that can be understood, you can relax have the audience suspend their disbelief on the other non important things. Like Beastars, where an amazing story is told in a universe where Komodo dragons can mate with wolves and have venom poisonous acidic enough to melt concrete and metal bars.
Sometimes, it's alright to slack off. Just know where and when to do so.