The Canadian outfit lost 2-0 to New England Revolution on the weekend, making it five losses in a row, and leaving the side without a win since early March.
Earnshaw has urged Toronto to arrest that run of outs as soon as they can so can swiftly move up the Eastern Conference table.
"Our standards need to be raised from what they have been over the last several weeks," Earnshaw said.
"We need to improve very, very quickly. Next week you will see a very different team because we can't put out what we did today. There has definitely got to be improvement and there will be."