Building model using Cloud DU Modern project

What is the best practice while building models using Cloud DU Modern project mode?

My requirement is - Client sends 100 page document but BOT needs to find only W9 forms our of that and extract information.

For this case, should I upload the whole 100 sample document to Modern project structure while building the training model or only W9 page is enough to upload and build the model in DU Modern project?

Upload Full 100 Pages and label the W9 Pages So the bot will train to recognize & isolate W-9 pages . You can also use W9 form public endpoint which will help you to extract the data from W9 page directly