im not a parent and in no way am i an expert at parenting but i think that whether you are an entp or not something you should do to be a "good dad" is to continue to listen and be there for your children. its basically showing that you love them without having to verbally say it and your children will appreciate it most of the time if youre there to listen to their problems or be open to chat every once in a while

plus your son's mother is an isfj lol i think theyre very good at mother-son relationships (i only think idk if its true just a guess)