https://www.qualitychess.co.uk/ebooks/CALCULATION-excerpt.pdf
Grandmaster Preparation: Calculation - It is good for a player with 2200+?
Not sure it's relevant, but my FIDE rating is 2360.
Why don’t you have the FM title?
I'm not sure how it works now, but back when I qualified for the FM title in the early 1990s the USCF sent me a letter saying I had qualified and that they would submit an application to FIDE on my behalf if I paid the application fee. I don't recall the exact amount of the fee, but it was something like $70-80. Being a poor law student at the time, that was a significant amount of money to me and so I declined to pay it.
Yes, it's okay for 2200+ level, but if you are close to 2200 you better be prepared to work hard, as it is pretty advanced.
The best way to improve from 2200 to 2300 as fast as possible is to play as many tournament games against stronger players as you can, and analyze them afterwards. There are no books that will benefit you as much as this.
However, some good books can also help. Endgames and tactics/calculation are usually the main problems for 2200s (these days they tend to know a lot of opening theory already). Some possible books might be:
(1) Endgame Challenge, by John Hall: This is a collection of endgame puzzles (white to play and win, black to play and draw, etc.) with hints and solutions. There are 451 puzzles, mostly theoretical endgames. Some of them are easy, but many of them are hard. It's a good way to test your knowledge of theoretical endgames and identify your weaknesses, and can be used to review the important theory again and again.
(2) Imagination in Chess, by Paata Gaprindashvili: This is a collection of 756 tactics puzzles, all master-level problems. Most of the problems should be challenging for a typical 2200.
(3) Any decent game collection: Studying a lot of games of strong players is probably the next best thing to playing for getting stronger, because analyzing games requires you to apply all chess skills at once. Any well-annotated game collection will do. I personally like Informants because you get a lot of games for your money, and they include all kinds of players with all kinds of styles, playing all kinds of openings so there is a really broad exposure to chess ideas. To be productive, you should always try to figure out the next move before you check the book.
Essentially, when you are trying to get to 2300 and beyond, you must start to be very active when you read books if you are not already; try to figure out everything for yourself and use the book to check your work. Passive reading does you little good at this level.
But playing lots of tournament games is absolutely the most important thing, and probably at least 75% of the equation for improving.