Connect your Instagram account to all your other businesses so that the company as a whole gets promoted across various platforms.
Make use of Instagram stories to advertise products. If you post a lot of content as posts, people might miss out on them, but they can see it all as Instagram stories.
Use Instagram Insights to learn which posts are doing great and which ones aren’t, which ones are shared most and which ones are viewed most. Sell more of the products that gain more traction to make a profit.