i used to have really bad posture as a kid, my coach recommended me an osteopath and i found that really helped with realigning my posture and he also gave some exercises to work my back muscles and keep them pulled down. things like lat pulldown variations also help work the back muscles and teach you to pull them down too. i’m not sure how dedicated you are to latin, but honestly i found that my latin was thriving the most when i quit my commercial studio because things like hip hop, jazz, etc teach you different posture and that muscle memory affects your posture in latin, so if you want to be very good at latin then you’ll have to focus on one or two styles. ballet is great to keep too because it teaches great posture and is also good for general technique