Nothing you'll do now matters for the future of your product, not even your appearance on product hunt (which barely is read by your target audience anyway), so just continue with what you were doing before.
Product Hunt in general is a negative externality on the startup ecosystem, but that's a topic for another day.
In all seriousness thanks for the comments. They're giving the sense that Product Hunt won't make us overnight millionaires and we've got a hard task ahead of us
Set a schedule and post, that's the way people will see your name from time to time, and after seeing it for 10 or 20 or 50 times, might want to try. Get on their radar.
See Auth0's blog [1], even though they sell one-click auth, they have a lot of neat content on front-end frameworks and so on.