Anon, look, the others are well-meaning but they truly don't understand.
And look what happens when you listen to them e.g. when they sugest you interrogate him directly after sex!
What a nightmare! If you value any of this DO NOT make demands and interrogate after sex. That's a sacred time.
Overall, the prognosis is not hopeful in the ways that you want it to be.
Simply asking him to "switch on" and try initiating etc. just doesn't do it. They're not his core values and will make sex seem an imposition to him. Increasingly, over time, this will cause friction and even when he does it, it will not be convincing.
A nondominant, inexperienced male "trying" to dominate is, quite frankly worse than useless. It provokes laughter and frustration that totally contradict the whole point of being dominated - which is, to feel totally and elementally a woman, in ways that don't need to be explained but are monumentally gratifying. You know this. So do I. He doesn't. And won't.
He offers other things. You're going to have to weight this carefully but don't expect to compel him to change and still maintain your current respect for him.
Newsflash: changing is a damned if you do procedure for men. Girls lose respect for men who can be manipulated in this way, even though they test them all the time. It's their tacit way of determining his psychological independence, and thus manliness.
This dilemma isn't as usual. My mistresses often got bored with their steady-eddy types because as their first flush of excitement of simply being in the relationship began to wane, the need for sexual stimulation increases. It becomes more, not less, important. If you aren't getting what you need, there
is no way you'll survive the challenges/rocky times to come.
Bad influence though I am, no girl wants to end her mistress relationship with me. We're all human. Girls are just as into this as boys.
When I get my need, I seek a cute new mistress and get my fix. So does she.
So, you could try to accept taking more of a dominant role - that will turn him on for sure. It's fun for a change but it gets quite fatiguing if you're more submissive inclined. Which many intelligent and accomplished females are. But no such female can submit to a milquetoast guy. Or a doofus - remember the soliloquy.
Or, keep it with him but hook up with a genuinely dominant older guy and taste the real deal. You may love it. Or it may be too much for you. You will never be at peace until you find out. Visualize being older and attached to this guy and still wondering...and knowing... that you will never know. That's worse than the other options.
Carpe diem.