Maybe you need to have a discussion with him about the structure of your work and thesis. It does seem odd that he expects written work each week - my work hasn't progressed like that at all. In the beginning there'd be some weeks where I wouldn't write very much at all, as I was reading or doing field work and then be busy transcribing. And soon you should be writing full chapters, which are definitely not doable in a week. Can you suggest that rather than hand in work each week, you hand in more work each month? Then you could hand in a decent sized chapter of, say, at least 10,000 words, in, every few weeks.
It sounds to me as if he's supervising you a bit too closely - you need a bit more flexibility, with deadlines that are task related rather than being weekly. Maybe you could also suggest less meetings - I meet with my sup monthly, or less.