Completed B-tech from tier 3 college in mechanical engineering and trying to switch into the AI-ML industry

After completing my btech I enrolled for a course in catia plastic trims completed the course but no luck in finding entry level jobs as the field required people with 2-3 years experience. Now looking at the current job in scenario in india Ai is the next trend. How hard is it to learn machine learning and Ai with basic knowledge about python. And if the career switch is right for the sake of hefty salaries as career in mechanical is linear. What roadmap would be preferable to land job in tech companies.