It's also important not to compare the number we've done with that of our Dharma friends. We are not in competition here, and we are not trying to fulfill a quota set by an outside authority. Doing the preliminary practices is about transforming our hearts and minds. If we don't try to do this, then it doesn't matter how many recitations or offerings we've done, for we're still locked in our old ways of competition. There are various ways of doing the preliminary practices.
Some people do a little of each practice every day.
What is more common is to select one practice to emphasize, either doing a retreat with four sessions of that practice each day or doing some of that practice each day while living one's regular life, until 100,000 are completed. It is helpful to have a group of Dharma friends who also are the doing the practice and meeting together once a week or so to practice and share experiences. Doing one of the preliminary practices strengthens our daily practice, for we do that practice each day so that it really becomes part of us in a comfortable way. Having completed 100,000 of whichever practice, we often naturally incorporate it into our daily practices, doing it in a shorter form, although this is not necessary. Some people may find counting awkward.