Instagram is a great social media platform for most businesses and is a platform you absolutely should be investing time into growing. Successfully cracking Instagram will allow you to make sales, gain new followers, and increase engagement.
There really is no right or wrong answer to how often should you be posting on Instagram to fully utilise the platform. If you scour the internet you will find several different answers but this will be entirely dependant on your business.
At the bare minimum, you should aim to post to your grid daily but you must remember that what your posting is more important than how often, if you regularly post the same posts using the same hashtags Instagram could shadowban you as it could flag as spam. We think you should invest time into good quality engaging content as this is likely to benefit you more than just posting for the sake of it.