Keeping your socials fresh without pummeling fans with 'check out my tune' posts can be a delicate balance, but it's a really important one to get right.
Your socials and artwork are your storefronts, so you have to be sure you don't neglect them: nothing says 'I don't care about this label' like a Facebook page that hasn't been updated for a month. In fact, it's better not to have socials at all than have ones that are rarely updated, although going down this route is risky and opens up an entirely different debate about best marketing practices.