Confused how to prepare for switch as I belong to both Java and Python Background!!

Hey devs,

I have 2 years of experience in IT and stucked at same company, need to move out from here. I am working in AI team where builds and maintains backend services using java, Spring Boot and python having AI/ML models integrated into them. So much confused which tech to choose for my interview preps. Well I am thinking of java as I am confident about it as compare to python. But right now so confuse about how to prepare for backend or java developer roles. Can you guys share your experiences and any kind of resources which are the best and covers all required?