Talk to Urologist on Male Fitness

Male age 31 with no medical history My vit d level is low sep 2018 it was 12.8 then i started drinking milk everybody because of vit d defeincy its been almost two year my vit d level is 20 still insufficient how to increase vit d level from insufficient to sufficient Currently having indrop d capsule After test 1 day 1 capsule of indrop d done After test 7 day 1 capsule of indrop d done Now will have on monthly two indrop d each in 15 days for two month After this my vit d will be sufficient or i need to do something more ?? I have outdoor job so i am having daily sun exposure vit d Pls brief