I have just a couple years of experience in software development and in the past few months have been dipping my toes in the water of making open source contributions. It was very exciting when my first patch was accepted! Recently I've opened pull requests to a couple projects and have gotten no response from maintainers. In one case it's been 3-4 weeks and in the other about a week.
In both cases it isn't clear to me how actively the projects are being maintained. There have been commits in the last few months but in both cases I can see that I am not the only person to submit a pull request or open an issue and not get a response.
What should I do in a situation like this? I could fork the repositories and use my own versions of the software but then I don't feel like I'm contributing. Also, is there a path for me to express interest in helping out with maintaining the original repos?