Despite how incredibly complex and well-researched my novel is, the research I've done explicitly for the story actually consists of about 5 google searches, and those were just to get a name right or go down a list of all the different types and variations of a creature I already knew existed.
1. Find the list of all human-animal hybrid creatures in mythology. (Harpies, Fawns, Centaurs ext...)
2. A little bit of information on Norse Dwarves.
3. A little bit of information on German Dwarves.
4. The origin of Gomes. (I strongly recommend anyone do this one, you will be shocked at how OP the original Gnomes were.)
5. The name of the "Blue Dragon" from the 4 beasts of Chinese lore.
I actually knew all of the content around the subject ahead of time, I just wanted to use Google to check myself to make sure I was getting it right. Thing is, I was a little bit of a lore buff going into my writing, so I didn't have to research a lot in order to write. For the bulk of what I do write, I just use prior knowledge. It really helps that I like to sit and watch Youtube videos, and one of the things on my viewing list is Shadiversity which gives a lot of information on Medieval life, especially weapons and combat. In fact, it WAS Shadiversity that inspired me to write at such a high level of information in the first place.
So, contrary to popular belief, you don't actually have to be doing a lot of research while you are writing. The detail-heavy stories like mine are actually supplied by a pre-existing knowledge base, and that pre-existing knowledge base is developed due to the passions of the writer picking up information that they just find naturally interesting and alluring, something they would be researching even if it wasn't needed for their story.
The question is not so much buckling down and doing the research. No amount of diligence will allow a person to write credibly on a subject they are not passionate about and haven't become absorbed in of their own accord before ever opening up a word document. The people who DO write effectively on a subject are people who don't really need to do the research in the first place, because they already know because they are writing their passion. You don't need to do research, you just need Google for a quick fact-check.
So, the recommendation I would give is to just stick to your passion when it comes to writing. Just find a subject you already have a lot of background in.
(Also, I will tell you a secret. Most successful people are really lazy, they are just effective in their laziness. If I'm doing a job, I don't want to have to be told to do it over again and have someone yelling at me, so I will make sure to do it perfect the first time so I can just forget about it and move on and hopefully get a good period of sit-down time somewhere during my shift at work. Inventors are just people who are trying to come up with a better way for them to be lazy. You can actually get a lot farther than you think while being lazy.)