When to apply???

This may be a silly post but I think I am confusing myself on the timeline to apply. I am like 90% sure I know the answer but I just want to confirm to not waste my money or time… I am currently in my spring semester of my third year of college (junior) and I graduate next spring so spring of ‘27. I thought that now would be the cycle for me to apply which I thought made sense because then (if accepted) I would begin vet school in fall ‘27 but now I am seeing that you’re supposed to apply your senior year of college???? Again, I might be confusing myself but someone also asked me which classes I have yet to take for prerequisites like microbiology and biochemistry but my advisor has me taking microbiology spring ‘27 so my last semester. I am also starting to think I would be applying too early due to the last 45 gpa… which I wouldn’t have until spring ‘27… so I’m kind of lost and wondering if applying now is a waste of my time and money or if that is correct. Up until now I thought it was… but then what would I do from Summer ‘27 to Fall ‘28 when I would begin???? I’m lost🫩