When you work for the guru even if it’s not meditation, even if it’s physical work, because there is a need for that, it contains so many thousands of mandala offerings, prostrations, etc. It purifies so many eons of negative karma and it is the greatest purification. It is said in the sutra Donpo gopai do that serving the guru makes us achieve enlightenment.

You can do Vajrasattva as planned or do a little each day.