A right answer can be the wrong answer if it comes at the wrong time.
You have every right to change your mind, or put on the brakes, or whatever else makes you feel more comfortable and more satisfied with yourself.
As long as you keep the needs of your son and yourself as priority over your wife's feelings at this time, then you will get where you need to be when you need to be there.
Do what feels
right and you'll learn you're doing what's right for your situation for this point in time.
You don't have to save the world today.
You just have to keep your son safe, and there is currently a plethora of options for doing that.
If divorce doesn't feel like the right one, pick something else.