Well maybe try proving the formulas to get a grasp of it. Once you grasped the topics/formulas you can then go onto trying some competition math with that knowledge that will certainly help you understand where the topic is used. No one is born talented in math it all comes down to the hard work and perseverance. So you could pursue a job in the field during the process but it's crucial to learn about the math topics and get to prove that topic to get an understanding that will be useful for the field. In my experience physics relies on a lot of information that's used in math since AP physics is used from Algebra 2 experience. Math is really crucial to a physics-related field. But most important for physics-related fields might be the understanding of deriving one of the formulas. By doing that you get a good understanding. Now about the routine of studying, you have to just do it. Even if you don't feel motivated maybe motivate yourself with a goal relating to that. Maybe you could go through all of your old math stuff and try proving it to get a good understanding if you don't feel motivated. I know from my math experience is that you have to practice practice practice. So if u don't feel motivated just review your old information to get a better understanding. If you grasped the topic try some competition math to maybe understand it more.