Here's a packaged workflow that contains the workflow, batch macro and one of the "week" files.
I stripped out everything from your original workflow except for the part that reads in the Week 5 data and replaced the Dynamic Input tool with the macro. Image below describes how to set up the connections.
The Macro itself is pretty simple. The Action tool could have been configured to have a hardcoded "5" in the formula, but figured it may be better to add a Text Box to allow you to specify what value it should look for so that this could be used for other use cases.
When the condition is met, the Action tool updates the Detour tool to go Left, which enables the Dynamic Input tool. When it's not, data goes to the Right which samples 0 records and creates the arbitrary "_Condition_Not_Met_" field.
Hope this helps!
Teknion Data Solutions