The effort becomes a memory concern where cheat sheets are how you transition or learn quickly into a new space.
I'm a polyglot in software development. I can work with most tech stack within 2-3 weeks and be efficient within 3-6 months, idiomatic within a year maximum. A big part of that is due to relatability between spaces. Every toilet has a flushing button and every kitchen has a sink and every language had a form of exposing positive or negative response.
My advice is always throw yourself in and swim. Find whatever swimlane or swimming aid available and move forward.
One caveat is learning spaces that are constantly shifting. For example, Swift. What a mess. Look up anything in that language and find 5 ways to do something, 3 expired, 1 manageable and 1 undocumented that works. It's sad but know that that's the outlier, not the average!