Once D-Day is over, it's time to look back:
Again, don't do this based on your intuition. Use your data, always!
Now is also a a good time for you to get in touch with your customers.
Based on all this data and feedback, plan your next iteration. Assume what next, build it (fast!), and restart the whole process of launching!
That's how you will, step by step, build a product that will reach a product-market-fit!
Please have a look at the resources below. They should help you with the next step!
(remove the demo data and use your own)