For many people chastity is a kink/fantasy where they want their kink/fantasy implemented. What is missing is the relationship.
I recommend that you both have a chat and agree on what you both want to do. Set some ground rules and commitments. These can change over time.
I write about a technique called Devotional Sex which is a bit like chastity but without the cage. This is based on some commitments both make. Adjusting these for chastity would come up with something like:
1 - You commit to wearing the cage whenever she wishes, and only ejaculating when she wishes:
2 - You commit to fulfilling all her sexual, sensual, and intimate wishes (within what you are willing to do at that time)
3 - You commit to being fully open and honest about how this all feels to you, what you like and what is difficult, and your fantasies.
4 - You commit to take prime responsibility for controlling your own energy and not pestering her, etc
In return, she commits to:
1 - Using her control to enhance HER sexual, sensual, and intimate life
2 - Keeping you equally happy
3 - always accepting and valuing your energy, and
4 - managing your cage wearing and ejaculations to keep the dynamic working
The above is a very strong foundation. Note that it says nothing about what activities she has happen, how often, etc. Though you tell her your fantasies, it's totally up to her what happens.
The other thing which is key is that she uses this for HER benefit, but she keeps you equally happy. This is RELATIONSHIP ENHANCEMENT.
One bit of magic is what keeps you happy changes significantly as this dynamic becomes your new normal. For example, it's likely that you will soon get so much pleasure from giving her oral sex that she can feel that allowing you to do this as making you happy.
Keeping you equally happy means that how often you are unlocked and how often you get to ejaculate has to be within what works for you. I recommend that you tell her a maximum which she can do without further discussion, and you tell her your preferred average. She can then decide to sometimes push you and have you last longer than you prefer, and sometimes surprise you by having you not last as long.
You may both find that you ejaculating on average every ten days works best because then your ejaculating is part of the dynamic. There is also the amazing dynamic between days say 7 and 13 when you will not know whether sexual activity will end with your ejaculation or not.
Or, of course, you may both find that much longer chastity, as written about on this forum, works best for both of you.
Remember, your journey is discovering what works best for both of you.
Two suggested activities which can be very powerful and fun and which are not talked about often in this forum are:
1 - Affirmation. Wearing the cage means you can't play with yourself nor get erect. Affirmation is when she decides to spend some time with you with you being naked and the cage is off, whilst she is dressed. You could spend a whole evening together like this. Naturally you will often get hard. Of course you are not allowed to touch yourself unless she says.
As well as doing all your normal evening activities, she can have you give her a foot massage or any other sensual pleasures.
She can touch you, etc, if she wishes. But she can enjoy Affirmation without touching you.
If she wishes she can direct you to play with yourself. At one extreme she could have you play with yourself often this way, at the other extreme this might be something she never or rarely allows.
When she ends Affirmation the cage goes back on. Of course it's totally up to her whether or not anything sexual happens in bed later.
2 - Devotional Cuddles. This is a cuddle during which she holds your erection. As having an erection is rare, and being touched feels extra powerful, a Devotional Cuddle can have amazing intimacy and connection.
She can uncage you for just a Devotional Cuddle. It's also an amazing end to any sexual activity - you have the sexual activity, the Devotional Cuddle and cage back on.
Devotional Cuddles direct your sexual energy into powerful intimacy and connection.
Giving her an orgasm and then having a Devotional Cuddle can be so powerful for you that though the cuddle has the energy of you wanting to cum, at a higher level you don't want her to have you cum so you can feel held by hers and will be energised for her tomorrow.
So your starting chastity opens the door to exploring what type of dynamic your wife decides she wants to enjoy.
Happy exploring.