Post-MALS surgery

I am 3 months post MALS surgery. I would like to hear from anyone who has had the MALS surgery but has not felt any improvement.
I continue to eat very little as the pain and discomfort and exhaustion kick in by 3 or 4 PM. in the afternoon and I can no longer eat for the rest of the day. I manage to consume about 1600-1800 calories and 50 grams of protein a day.
It is very difficult to sleep or fall asleep at bedtime, (10 PM.) I take Lyrica which is supposed to calm the inflamed nerves, also Tylenol. These drugs don't seem to help. I understand the surgery has about a 50% success rate.
I'm 71 years old, 6 foot, one and I weigh 114 pounds. I'm very weak and can not be up for more than 15 minutes or less. I think the weakness is from my low body weight and from the need to recover from the open surgery.
Are there any published materials, books or medical journal articles or patient histories available to purchase?
I would greatly welcome any comments or shared experiences from other patients. Lou D'Amico