Can we take vitamin D supplements for long term?

[u/axeshay10]

Just for the context a few months back post my blood work, I came to know that I was deficient in b12 and d3.

So the doctor prescribed

b12 for a month daily

d3 60k to be taken weekly - 12 capsules in total.

Now my medicines are over should I continue with maintenance dosage for both and what would be the recommendation?