Maybe it's misleading to say there are too many sounds, because they are all justified. But they are a bit unbalanced for sure, so tweaking the levels might be enough to make it less overwhelming.
I understand that all sounds are justified in a way that each is attached to an action, but I still don't think each action has to have a distinct sound. Sometimes it's fine if a character doesn't produce a sound on landing, for example.
There's one famous video game reviewers (whose name evades me) who points that out in one of his reviews and I thought that it was a very valid feedback.
And you're right, toning down some sounds can be enough to make it more organic.