Developing Dominance

Hello everyone! This is my first post here and I’m excited to actually talk to others about the beginning of a very exciting adventure for both myself and my partner of four years. I apologize if this post of mine is very related to another thread on here. I’ve never been good with finding pertinent threads on any forum even with searching. Not sure why, but whatever. My main point is that I desire to be dominated and controlled. And though my partner is excited to have me locked up, I am concerned of being locked up and left. He has had a lot of times where he doesn’t initiate sex with me for a while and besides that, he has never been very vocal or expressed his desire for control. Until now at least. It started with a little playful orgasm denial that he seemed to greatly enjoy, and naturally, it quickly spread into a desire to make sure that his word is the end all be all. Therefore, locking me up. He claims to really like the dominant feeling that this role gives him, and although I believe him and feel there is a very dominant individual inside of him, I fear that this won’t grow further in a way that I want. So, how will my to-be keyholder grow as a psychological person? Will the moment that I am actually locked up result in a sizeable spark for him? Will his certain ownership of my body lead to a slow but steady growth of dominance? There is some sort of discomfort inside of him with the prospect of taking full control. He is also worried that he might not be good enough at such a role. How does the process affect a keyholder? As the wearer, can I help him into the dominant role somehow in the process? Any thoughts/suggestions are greatly appreciated, and thank you in advance :)