Vitamin D Loading dose

Patient: Hi there I have been diagnosed as being vitamin d deficient and my doctor has prescribed a loading dose of D2 50,000 IU once a week for four weeks and then I begin usual supplementation of 1000 or 2000 IU daily upon completion. Does this mean I take the 1000 supplement the day after I take my last D2 50,000 dose or do I wait a week and then take it?Thanks