Keep working on your content and backlinks. If you are one of the top 10 results, you have good authority on Google. That means unless you do really bad, Google won't push you out of the 1st page.
This is the time where you post on social media in a creative way so that people like your posts and might share it. Do the visual and demographic work which people are usually attracted to.
Brother, 1. Keep updating the article with new information. If it is a list, Add new products to the list. Visitors can get more information and search engines help you as you are frequently updating that article. 2. Build some links regularly. It isn't a good idea to build all links in one day as it might results in bans 3. Improve social signals. Ask people to share your article on social media profiles and it will help you in ranking good. With these tips, you can stable your rankings.
Posting regularly can improve your ranking and remain your ranking constant but still you need some other sauce of optimization which is social sharing engagement.
This is the time just keep on track & check what’s the content your competitors publish, the links they invite and the social media marketing efforts they execute. If you visit regularly with your competitors’ promotion activities, you can best them to maintain your search engine rankings.