I did this in early 2019 to be able to work on OpenFaaS. Consulting is going well, monetising OSS, less well.
Craig Box has me on the Kubernetes Podcast to talk about the journey and career from FTE to having a company
https://kubernetespodcast.com/episode/116-independent-open-s...
With regards to your current revenue, it takes time to build up your client list and for you to understand what people are willing to pay for, that you can do. As you'll see in my journey, I quit to offer support to commercial users of OpenFaaS, many were happy supporting it themselves because we err on the side of simple / documented. Developer brand and experience is something almost every company with a product needs help with.