questions?

Question 1 - I have a question for you. I know you have gone into subspace with your Dom. My question, this is a point I want to reach with Sir. He is aware of this, and states I am not ready to be there yet. I do feel I am not because in part I struggle with control. I think my other issue is that I know if I reach it that we need time afterwards. He needs to make sure I am safe before I drive home, etc, and we don't always have much time. I think subconsciously I realize this so I don't allow myself to even try and go there.
How do you handle the time factor into the equation?
Thank you for any insight. I greatly appreciate it.