I had a small confusion. I plan to do grahapravesam and consulted an astrologer. He has given the date and fixed the time between 9.15 to 10.15 in the morning. He specifically told to do milk warming ceramony between 9.15 to 10.15 and then to start all the poojas/homams. But sasthirigal (vaathiyar) is insisting to do the poojas/homams first and then to do the milk warming ceramony at the fixed time. Can anyone clarify which is correct?