its good to have a habit of publishing at least one article every week on your site but if possible try to make it 2-5 articles in a week and also publish articles on other sites in order to drive traffic.
Virtually every company has at least some experience with posting on this site. According to research by SocialBakers, the sweet spot for companies is between one and two times a day during the week and a maximum of once a day on the weekend
It seems to me that the number of blog posts per week depends on the number of your visitors. If you have a lot of visitors, they should be interested in your blog and you need to frequently update information.