Vitamin d tablets

Hi all I'm currently on 40000 units of colecalciferol a month for vitamin d deficiency I'm going on holiday tomorrow does anyone know if i can take tablets a couple of days early don't want to forget

what is your current level of Vitamin D ?

what is your current level of Vitamin D ?

I have no idea went to see my GP last month asked for another blood test doing see what it was at he said no they won't do another one till I have finished my tablets which is not till July