Bruce we have told you many times what you have to do.
But you ignore it, most likely because you dont want to put in the effort. you want a quick answer to get what you want.
Fatherhood is not about getting what you want, its about giving what your son needs.
you claim you want a second chance, without realizing you are living your second chance now. and frankly, not doing a very good job of it.
stop whining and man up. you made a mess of your family, your own choices are what caused this problem. be happy you get your son 10% of the time because what you've done so far doesnt deserve any more time. you havent earned it yet. and you dont get it for free.
there is no answer on how to magically get 50% of yours son's time. Except to do what all of us have already told you and what you've repeatedly refused to accept.
Admit your role in this situation and accept the consequences like a man, instead of the spoiled petulant child you are now.
Do the work.
Stop blaming everyone else but yourself
Study and learn to become a real father
Put in the time and effort and stop trying to find a quick simple answer because none exists.
Stop changing your answers because you were caught, no one believes them and it makes you look weak and selfish.
Use your 10% wisely, because until you PROVE you deserve more you wont get more. And that does NOT mean being a weasel and trying to prove your x deserves less.
What your x does has no bearing on your ability to be a good father.
"In a ham and eggs breakfast, the hen is involved, but the pig is committed".