Neither of my parents were in the military but i did have a split family. By the time i was old enough to know what was going on it was already second nature to go back and forth between my mom and dads house. Your son is still young. I say go in now and serve. Idk how long people usually stay in for? Like 2 years? If its the reserve maybe more? Idk honestly. But even if you do like 5 years and get out then your son will only be like 10 years old. I suggest the air force bc i believe that they have the highest rate of discharging people with Associates Degrees. One of my teachers was in the Army and he told everyone if they wante to go into the military go into the air force bc of this. Also bc they had the nicest barracks lol. So if you go in for a few years and get paid to earn an AA or even BS maybe then it will benefit your son in the long run. He wont see you all the time for a few years but it wont be forever. With a college deg youll be able to re enter the workforce making alot more money, that you could put towards something like your sons education. Theres also probably special scholarships just for kids from military families. It may seem like a negative thing in the beginning but once you get discharged and are holding a degree youll be alot happier and youll be able to spend more time with your son again!
This is just my 2 cents on everything. Idk a whole lot about military stuff so i apologize to all you veterans in advance if i messed up some terminology or something lol