In your question you didn’t put any specific reasons why you think it’s a good idea to open source your project. There may be certain immediate benefits, such a

In your question you didn’t put any specific reasons why you think it’s a good idea to open source your project. There may be certain immediate benefits, such as the discipline it would force you in to. There are big downsides too, such as the distraction of bug triage or code reviews taking you away from focusing on growing your business. Until you decide, why not work on project as if it was already open source (PRs, unit tests, documentation, etc.) without actually opening it up, and see how it feels first? If the hassle of keeping it going feels like too much when you’re by yourself, that would be valuable to know before you involve others.