I've identified that I have problems with my ring finger on the fretting hand. At times I get buzzing due to not pressing hard enough on the fret. I also have dexterity issues of either slightly missing the string or when I want to move the ring finger I instead move the middle finger.

So is there any excercises that focus on helping my strength, control, and dexterity of my ring finger. I do play excercises slowly focusing on my movement of my fret hand but I just don't seem to be making much progress. Any suggestions would be appreciated. Thanks.