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I think most reads on here will say wait til month 6...and for the questions, I've simply answered them honestly in the past; not sure there is a magic answer. Cap1 has not been as generous with CLIs as other have been so your mileage may vary on this one.
I believe if you use the app it doesn't ask those questions.
3k limit on Platinum could very well be near/at its ceiling already. If no CLI after full 6 months? maybe ask for Product Change to different card with higher growth potential, like QS, Venture or Savor.
Based on my experience and some of what I have read here, you may want to check the pre-qualification and see if they want you to take the QS card. They really seem to want that $39/yr. And something about buckets...
I have a strong feeling that question is just a placebo. (Like the button at the crosswalk). Cap1 soft pulls you plus they have all your spending data. The system has a number for you already.
Combined with the fact that depending on how you access the CLI you may it even get asked that question and it’s optional anyway, I doubt it plays any roll in the amount you get.