Robs voice was very gruff and eventually for a few days he couldnt speak at all,or even drink water.The peg was a life saver then,and it soon passed and he could drink fine after a couple of weeks,but his voice was never right.
It is a hard thing you are doing watching someone you love suffer and not being able to do that much to help,and if you are anything like i was you will feel sad and helpless on occasions.
Just be there for him when he needs you and learn to step back when he doesnt.
good luck and much love liz