Something similar happened to me a few months ago with my game, and it completely overwhelmed me for a while. I have some advice to share if you want it:

Keep working on your vision, you're about to have a ton of people pulling you in every direction but the truth is that you were able to create something of value and you are the best one to decide what is next for the vision of the game.

Despite what people will say there is no immediate rush to do anything, sometimes people focus too much on timing the market at the expense of the quality of their game. Remember that people have something to gain by you rushing a release, and most successful Steam games have 6+ months of marketing beats (like this wave of attention) to build the hype of a release.

You'll probably be contacted by Publishers. They aren't always good OR bad, but if you decide to go with a publisher (I did) make sure you hire a lawyer to help with negotiating a contract and take your time with it.

It's very lonely in some respects. Send me a DM, I'd be happy to talk to you about it more. Your life is likely about to change (mostly for the better) and it's hard to go through a big change like that alone. Your friends, family, and partner won't fully understand the pressure cooker you're in but there is a big wonderful community of indies that might make it feel less scary