Re: "solo" training?
Felipe, you might consider doing the aiki taiso exercises that Tohei sensei propounded. Fune kogi undo and so forth are excellent exercises for developing aikido movement and I believe all of our techniques can be found in those movements. You Tube has plenty of example videos. We do them at the start of every class. I learn something each and every time that translates to what we do later that same class. I do them at home frequently and find they help.