Ritalin is a common ADHD medication, but ADHD medications are also helpful for those who are suffering from extreme fatigue.
Ritalin should be okay to take with both Plaquenil
and Savella, but you should check with your pharmacist.
My other thought is instead of Savella, you might do better on a different type of anti-seizure medication. I do better on anti-seizure medications than anti-depressants for my Fibromyalgia, but like you the Lyrica made me drowsy.