Rimmer is spot on.
I’m wrapping up the first semester of a 3 year grad program and can 100% verify, if you don’t have developed sketching or CAD skills, you will most likely not be offered much in the way of classes to develop these in your program. All your catching up will need to be outside of your regular load, which is heavy.
After several conversations with my dept head, he essentially downplayed the importance of sketching and CAD skills. . . siting his own successful career as a project manager for a design firm.