As a transition you can put tofu in a meat dish so they are seen together as seperate things rather than as a substitute. That might make him more friendly to the idea of tofu. That sure helped me transition my brother to eat tofu. Suitable dishes are Chinese mapo dofu (tofu) and 'scrambles' like you might put in a pie or pastie mix. Also try curried tofu dumplings.
I don't eat meat at all, and I see this as a good way to help others eat less meat by becoming more familiar with tofu.
The problem is I don't eat animal products, nor do I cook them. Luckily, I've got his word that he'll try something.
I know I'm late too, but here's one!
take pressed tofu and cut it into 1/2 inch slices, dredge it in soy sauce [or tamari], 'flour' each side with nutritional yeast and fry for a couple minutes per side in a small bit of olive oil in a shallow frying pan
this is THE BEST way to eat tofu in my opinion. My uncles gf used to work in a huge LA restaurant that would serve that, [she shared with me.

] and it just tastes fantastic. somewhat like chicken kind of taste. but really good.
Sounds a lot like the tofu-nuggets I make, but I bake those. Maybe I'll go with those. :]