At what point in the relationship should I move in with my girlfriend?
I’ve been considering it for a while. She was my neighbor, long-time good friend, and I’ve been into her for a while. We started going on dates and becoming official not too long ago, and I was thinking of moving in with her.
All our families completely support the idea and so does my GF.
There is no 1 single answer. Just do it when you (and they) feel comfortable. Considering from a practical standpoint, do it when both of you are comfortable in sharing their chores, and having dull moments in life.
I recommend reading about the relationship escalator . although it's a tool primarily aimed at poly people, even monogamous people can benefit from learning about how you're allowed to not consent to societal norms.
TLDR: only you can decide if you wanna move in with her, if at all. letting other people tell you how to organize your relationship will only end in misery
Normally, being official a short time would not be a good time, but it sounds like you've already spent your whole life knowing this person, so I don't see much of a reason why you should have to wait.
Generally, there are two broad factors that potentially mess things up. Spending long periods with each other (esspecially in a casual setting) and finances. I'd try and think over how well you know her (and she knows you), to try and make sure it won't be an issue before you commit to it. For example, have you gone on long trips together or spent more than just a weekend together? If you haven't, maybe try and spend more time together and learn more about each other. If you have, are you confident that you'll be comfortable spending much more time around her. As for finances, there's obviously only so much you can learn, but do your general stances align? Have you fought about stuff like that before?
Ultimately, you both should have enough information about the other person to feel comfortable with the idea, and not feel like you're going in blind. This is a commitment, so you should be well informed before taking action, and prehaps have fallbacks if you feel theres any chance things don't work out. If you're asking strangers on the internet, its not a good sign, but ultimately you're the only one who has the information needed to judge.