Advice on off-site SEO postings on social media - Advice!

Hey guys,

I am with a healthcare news site, and we are experimenting with various off-site postings on different social media forums.

We're on Facebook, LinkedIn, Instagram, Twitter, Pinterest, and most recently, Quora.

Do you guys recommend multiple postings per day, or fewer postings, but more engagement around each post? Like post something and then add a comment to that post later in the day, etc.

Any advice would be appreciated.

Thanks!