The Cubs are batting .255 in May after hitting .237 in April, and in the last 20 games since April 24, they have outhomered their opponents, 20-13.
"The guys are doing OK, but we have to be a lot more consistent on a daily basis," Sveum said.
Chicago hit .277 in a five-game trip to Milwaukee and St. Louis, but was held to three hits Wednesday against Philadelphia.
Blake DeWitt has accepted an assignment to Triple-A Iowa. The infielder was designated for assignment for the second time this year on May 6, cleared waivers and was outrighted to the Minor League team. DeWitt was batting .138 in 18 games.