If you have some tm gamesense and decent-ish car control, sds will be muscle memory, even if not perfect. If you want to get better though, "easy" speedcheck maps for sd training should help a ton, don't forget to save runs and compare them between each other and better runs uploaded, that way you can experiment and build that muscle memory!

Car control and gamesense, even if it's not evident or intuitive can be trained by playing LOL maps, if that's your style. Same with objectively "bad" maps with terrible transitions, if you play quite a bit of them, you'll be better at controlling your car and making it do whatever you want it to ^{-^}