Ask HN: How to get your PR reviewed?

Hi, Is there any code of conduct on how to get your PRs reviewed in a dev team? I work in a team of about 6 devs and I sometimes get frustrated when none of them is reviewing my code for a few days. Another problem is if a PR gets merged even though I am still reviewing it (because someone else already approved it). How to indicate that I'm still reviewing it?

We are using github, slack and jira