I think what you promised him will be very sweet after it is completed on schedule. In fact, he will feel the expected happiness when he promises you. If you do, it will definitely deepen your mutual happiness. I don't think his mind is very mature, so he always thinks of a solution. In this case, you can make some decisions for him. For example, if you ask him to finish something and tell him that you will be unhappy if you don't finish it, it is of course within his power, so as to gradually cultivate his attitude of acting for you.
My mind is a little confused today. I hope you can understand. If you have any questions, please leave me a message or continue our discussion in my space.