How much do you want to stay together? Both of you, not just do you want to stay with him? If the relationship has run its course than maybe you should go it alone. If you want to stay together then Douglas's idea has great merit.
In our case it was the other way round - Mr Ara wanted to try living in a more self-sufficient way but I only pretended to everyone that I wanted it too. I have grown vegetables for years and was happy to continue with that sort of thing. He wanted animals but I didn't. Anyway, 10 years on, his health meant that he was struggling with the sheep (the cows went a few years back and the pigs are in the freezer) so decided to sell up. Suddenly, I realised that I loved it here and didn't want to go. As I have taken on more of the animal work, I wondered why I didn't go on lambing and sheep shearing courses when we first moved here. Ah, well, there's no point saying "if only" so I will just remember the experience with happiness as we move on to the next part of our lives together.
I would add, do it now before you are too old and creaky as we have become!