Sentence examples for do so too from inspiring English sources

The phrase "do so too" is correct and can be used in written English.
It is typically used as an emphatic agreement or confirmation of something that has been previously stated. It is often used in place of "me too" or "I do too" to avoid repetition and make the sentence more concise. Example: Person 1: "I really enjoyed the movie we saw yesterday." Person 2: "Do so too. The plot was so unpredictable."