Is it cold where you are? Maybe Herbie could use a blanket, if it's below 40 degrees.Herbie is loosing weight on the chopped hay. I think the only way it will work is to significantly increase the hay and leave him up at night to allow time to eat it all.
Going into winter skinny is just not good...
Not good to loose weight this time of year, having same issue, ice has lost some weight.
I added a liner to the blankets he's already wearing.
Are you still feeding him senior feed ?