Pregnancy Support Group
Welcome to the waiting room for anticipating moms and dads. Whether you're expecting your first or a new little brother or sister, meet other parents in this community who are also looking forward to a new addition to the family.
That being said, if you told them one day that 'hey, fyi I get to start school early,' and then later you let it slip that you and your ex have been on really good terms lately, then that would be a good start. Let them see your plan first without letting them know why.
Judgy people will judge, it's what they do. But if your family disowned you, an adult, for making the adult decision to get your life in order and have a child, their grand child BTW who they should love and spoil anyway, then I would personally say that they aren't worth the time worrying about. They can be sad or mad or angry or scared for you at first, but they should also come around eventually.