The option that is NOT part of Friar Lawrence's plan to help Juliet reunite with Romeo is:
Friar Lawrence tells Juliet to have the Nurse hide the potion for her until she needs it.
While the Nurse does play a role in Juliet's story, Friar Lawrence does not instruct Juliet to have the Nurse hide the potion. Instead, he gives her the potion directly and explains the plan to her.