Where do you get your information?
I read history, historical novels, biographies, anything related to the period. I’ve done so for thirty years. I keep note files on anything interesting, especially language, the politics, and the details of everyday life, roughly organized under Court Life, Sea Life, Science, The Theater, and so on. Anything that I have the slightest reason to think may be of use, whether I have a specific situation in mind or not, I enter into my files. After three decades they are both voluminous and full of juicy stuff.
I treat information the way an illustration teacher once advised my class to treat visual reference material. If something catches your eye, don’t second guess yourself. Grab it and store it, for the day when you need a close up view of a terrified mouse … or whatever.
If I’m stumped for an answer to a problem, I read through my notes until some or other bit gooses my sluggish imagination. I do additional research, of course, but this is where I start. If you focus on a particular period, I recommend this strategy.