If I'm understanding your question correctly, the Dynamic Select tool might be useful for you. You can choose whether to include or exclude fields based on the name of the field. When you open the Configuration window of the tool, you can click "Select via a formula" at the top. Then you'll be able to write a formula in the expression editor below and you can use the [Name] field to refer to the name of the field that you want to keep or omit based on a particular condition. For example: Contains([Name], 'time') will select all the fields that contain the word time and all other fields will be dropped.
