I'll tell you what must be my favorite statement as of recently: make sure somone shows you HOW to do the exercises and tells you what their objectives are. Without that they are just a bunch of notes that may well be quite useless if not done properly.
Violinist, you seem to have a fair amount of resources. Have you looked around for a good teacher? A really good teacher can make your playing grow in leaps and bounds. Even people who are presumably good at the piano need a teacher because they simply cannot see what they are doing the same way a teacher can.Even with good advice from this forum, IMO you'd still be wasting your time if you tried to learn by yourself.