Early yesterday morning, before the start of a full day of social engagements, Richard Schweiker jogged two miles around the cul-de-sacs of McLean. "I feel that those four days -- we got 60 invitations -- running a federal department will be easy," said the nominee for secretary of health and human services, a department whose budget is third to those of the United States and Soviet Union.

Others at the Institute for Contemporary Studies brunch for Edwin Meese III, who whill be counselor to the president, and Caspar Weinberg, the nominee for defense, were also adjusting to the rigors of the inaugural schedule. Jeane Kirkpatrick didn't know quite what to do with her military aide. So the United Nations ambassador-designate introduced her, right along with her husband, Evron. "This is just not my style," said Kirkpatrick empaphatically.

Walter Cronkite, the CBS anchorman, described his schedule as more relaxed than at past inaugurals."I guess they know I don't have to be there for every rehearsal," said Cronkite. The coverage of the possible release of the American hostages from Iran at the same time as the inaugural events would be handled routinely. "I expect we will see them get off the plan at Wiesbaden, and go to the hospital. Now if they are flying into Washington, that would be a whole other technical story," said Cronkite. Nearby, former Secretary of State Henry Kissinger, economists Milton and Rose Friedman and millionaire W. Clement Stone had their own cluster of admirers. Kissinger endorsed Secretary of State Edmund Muskie's warning to Soviet Ambassador Anatonliy Dobrynin over Soviet charges that the United States was planning a secret military attack on Iran. "I probably would have done it earlier," said Kissinger.