Unconscious knowledge connects on its own, surfacing in the form of intuition.
It can’t be forced.
And you can’t “decide” to access it.
In fact, moving away from consciously searching for the answer (back to a more dreamlike state) is likely to free your unconscious mind enough to bring the answer up to you.
Get in the habit of recording every such intuitive connection your unconscious mind delivers (even if you have to leap out of bed at 3am to do so). The more of those connections you capture to later consider and weave together, the sooner the particular answer you’re looking for can find you.