One year is way too much. Tbh, you need two semesters of coding to beat tech interviews. An intro to programming class and data structure class(Which I think you have).
The only advantage taking more classes is that you develop "Comp Sci street cred" but I believe it has no correlation to success in interviews. The advantage of experience is that you get to master a certain language well. Other than that it just comes to a matter of how you practice.
For "culture fit"(which generally means don't be an asshole), communication and butterflies, I think https://www.pramp.com/ will go a long way in helping.
The only advantage taking more classes is that you develop "Comp Sci street cred" but I believe it has no correlation to success in interviews. The advantage of experience is that you get to master a certain language well. Other than that it just comes to a matter of how you practice.
For "culture fit"(which generally means don't be an asshole), communication and butterflies, I think https://www.pramp.com/ will go a long way in helping.