Can I Just Take B12 and B6 Instead of a Full Complex?

https://www.msn.com/en-us/news/other/why-a-good-nights-sleep-might-depend-on-vitamin-b-complex/ar-AA1JFwc3?disableErrorRedirect=true&infiniteContentCount=0

Look, if you’re struggling with sleep and wondering if popping a couple of B vitamins—say, B12 and B6—will do the trick instead of taking a full B complex, you’re not alone