Parents' objections are mostly because they don't understand their children's choices, or think that there should be better choices, focusing on what is good, not what children like and what is suitable for them. I think the best way to do this is to communicate and let parents know and recognize this job.
I encountered such a problem when I just graduated. My parents wanted me to be a primary school teacher and forced me to take the exam. Then I painstakingly took the teacher qualification exam and became a teacher. After teaching for a semester, I secretly resigned and went to a state-owned enterprise. It was not until I worked in the enterprise for half a year that my parents knew that I had resigned and were furious with me. I have to wait for them to vent before communicating with them. Finally, my parents understood me and agreed to my choice. So there is no other way, only communication!