Your dosages look incredibly high!!!!
I took Lyrica 75mg twice daily for pain arising from PD (left side spasm). It worked for 4 months (Oct 06 - Feb 07) but I had fits of severe daytime drowsiness + I put on 28lbs in less than 2 months. I have changed to Amitriptyline 10mgs per 24 hrs taken at bedtime (11th April). So far this is working with no adverse effects.