Depends on how much you like drawing. If it’s something fun for you, then it’s not time wasted and it’s definitely worth the effort.

I will say that while constant practice is definitely important, it’s also important to have structured practice. Practice without structure will just lock in bad habits.

By far the fastest and easiest way to improve quickly is to practice blocking. This is a technique where you simplify an object or a scene into simple geometric shapes - cubes, spheres, rectangles, etc. You draw out those shapes onto the page. Then, you add in the details. This forces you to map out where the objects are in your composition before you start drawing. Not only does it help with spatial awareness, it also lets you notice if the positioning of objects doesn’t look quite right and requires fixing, before you’ve spent a lot of time on drawing that object

If you plan to draw comics, then you might be drawing scenery or backgrounds as well, in which case you’ll probably also want to study and practice perspective drawing