Another thing, and it may not apply at all, but in both of my programs we had an adviser, but also a committee, so it just wasn't up to one person to guide us. I take it this is not the case with you, which is a shame. Any chance you can either get a backup/assistant adviser?

And remember, IT DOES NOT HAVE TO BE PERFECT. It only has to be good enough. 10 years out from my Masters thesi (Type A--I did 2 simultaneously but I've chilled out considerably since then), NO ONE CARES about it. Not me, not my job (none of my jobs I've had in the past 10 years), and certainly not my advisers!