I would stick at it but it is difficult. I was on pramipexole for 9 years. Initially it worked well. But I had to keep increasing the dosage from 0.088mg at the start to 0.7mg for the last 3 years. Like you I was suffering from augmentation and it became clear that pramipexole was making my condition worse. My sleep was down to 4/5 hours a night.
Coming off pramipexole was very difficult and I had a number of sleepless nights. Since then I've tried rotigotine patches and gabapentin without much success. I'm now on 300mg of pregabalin.
Although I'm not cured, my RLS is much less pronounced during the day and evenings. I am also getting more sleep - 6/7 hours. But nightimes are still a challenge often waking with RLS symptoms in my legs and sometimes arms. When this happens cocodamol or a soak in a bath with Epsom salts can provide relief.
Hope this helps.