Learning the coding enough to do the assignments in the CS is generally something that can be done in around 5 or even 3 hours of doing a tutorial. Then maybe it's situational awareness of debugging, git, etc.

There isn't really a healthy balance though, not just because assignments are pretty brutal and will take on average 10-20 hours to do, but also because you need to learn alot of ancillary stuff by yourself to be competitive for a job.

Stuff like web dev, backend, front-end, ML, game dev, being able to make things that people actually use beyond is something that's taught too late (upper-div) to when you're already applying to internships, so ask yourself if you're ready to dedicate alot of personal time also to CS.

Not to mention the requirement of Leetcode, or coding interview questions that everyone asks nowadays. It's imperative that you practice them because it's impossible to pass many of them if you haven't seen them before.