Regarding the B12, that should be fine. But don't stop it for too long. If you store well, it is likely that you'd be fine for months to a couple of years, but it is not worth the risk.

You might consider cutting back to once a week or stopping altogether for several weeks, and then taking another B12 test (after not having had B12 in any supplemental form for at least a few days). That should give you an idea how well you are storing.

rose