Generally, it is recommended to post 1 time and no more than 2 times a day. According to recent studies, if you post more than twice in a day, the engagement rate of your followers eventually drops. People feel disengaged when they see too many posts by the same page, while on the contrary they can lose their interest as well if they see posts rarely/if they do not see any post for a long time. However, while posting any type of content on social media, it is important to focus not on the quantity of posts but the quality of them.