If there is no possibility to study theoretical or mathematical physics in your vicinity and you don't want to or cannot move far away, then I would suggest that you do a double degree in mathematics and engineering and study a bit of more theoretical physics yourself at home.The amount of time required for studying mathematical physics can vary depending on your individual learning style and the complexity of the material. However, as a general rule, it is recommended to spend at least 2-3 hours per day consistently studying and practicing math and physics concepts to excel in this field.
In addition to mathematics and physics, it is important to have a strong understanding of computer science, statistics, and programming languages. These subjects are essential for solving complex problems and conducting research in mathematical physics.
Practice is key to improving problem-solving skills in mathematical physics. Make sure to work through a variety of problems and challenges, and don't be afraid to seek help from professors or peers when needed. Additionally, developing strong critical thinking and analytical skills can also greatly benefit your problem-solving abilities.
There are many resources available for studying mathematical physics, including textbooks, online lectures and tutorials, practice problems, and study groups. It is also helpful to attend conferences and seminars to stay updated on current research and network with other professionals in the field.
Balancing your studies with other classes and responsibilities can be challenging, but it is important to prioritize your time and stay organized. Make a study schedule and stick to it, and try to break up your studying into smaller, more manageable chunks. Additionally, don't be afraid to ask for help or delegate tasks to others when needed to alleviate some of the workload.