congrats. But traffic from product hunt (et al) and news articles, etc is always temporary. So here in a bit it's going to die down, no matter what you do. You may or may NOT get users from it, and there's nothing you can do about that--a lot of times on these types of sites, people are just curious and move on to the next thing tomorrow.

Just remember that, and don't let it discourage you. Keep doing what you're doing and stick to your plan.

Also, product hunt, hn, news articles are not a substitute for a marketing plan. So if you haven't thought about how you're going to get users without them, it's a good time to start thinking about it. Traffic from PH, HN, news, etc should be thought of as a bonus--a nice thing to have.. your startup should not depend on it at all. (Edit: to expand on this.. traffic like PH is semi-random. While marketing is a process. You can't depend on semi-random events. But you can execute and refine a process.)