Your presence here is greatly appreciated; not only for being here but also your support of your partner and son. They are very fortunate to have you and so are we.
There are other partners and spouses of trans people here. Clearly it can be an uphill journey because it can be such a surprise. I hope that if the situation arises that you can be a source of advice and counsel.
When you have time, please complete your Profile page. It informs other members as to your situation and how your family is doing. As more threads are created, this one will eventually wind up at the bottom of the pile. On the other hand, the Profile page will always be available and can be updated as needed.