Best firms and internship timelines for project finance

Hi everyone. Currently a rising junior with a treasury internship. Many people at the company I'm interning at previously worked in project finance and I've spent the last few days learning about it and seems like something I want to pursue. I'm not too familiar with the process, but it seems like Japanese and European banks are major players. Would appreciate any insight into the internship timelines and application process for those who went through it and any advice. I've been considering reclassing since I only became interested in finance toward the end of my sophomore year and feel like I'm already behind.