— With that, work on generalized coordinates, Lagrangian and Hamiltonian mechanics
— Brush up your calculus, vector calculus and linear algebra kung-fu
— Have a personal project to aim your efforts. For me, it was understanding precisely how nuclear weapons work (so I have to run many geometrical and hydrodynamic calculations). For you it might be something else.
— If you stuck with some textbook, grab another one, you will be able to return later with the new knowledge. Physics is fractal.
— Solve exercises
— Learn the fundamentals (action principle, conservation laws, symmetries, statistical physics)
— With that, work on generalized coordinates, Lagrangian and Hamiltonian mechanics
— Brush up your calculus, vector calculus and linear algebra kung-fu
— Have a personal project to aim your efforts. For me, it was understanding precisely how nuclear weapons work (so I have to run many geometrical and hydrodynamic calculations). For you it might be something else.
— If you stuck with some textbook, grab another one, you will be able to return later with the new knowledge. Physics is fractal.
Best of luck!