Don't think you need to be on every social media platform.
Trying to be on every social media platform is like simultaneously trying to hit on every girl at the bar. There is the slim possibility that you might get a few numbers, but you’re more likely to fail miserably and bruise your ego in the process.
Only being on Facebook is fine (if your band’s target demographic is your mom, aunt, and all those companies you liked in eighth grade). If Twitter and Instagram is where you find the most traction, then invest all of your time in that.
Having more social media accounts than songs is never the look. Independent musicians need to spend as much time as possible perfecting their craft; having too many social media accounts can ultimately distract from that.