Female, 60, 5'6", 125. Having Xiaflex Injection Tomorrow At 1.

Female, 60, 5'6", 125. Having Xiaflex injection tomorrow at 1. The dr gave me 5mg Valium to take 20 min. prior. My psychiatrist said that would not be enough due to my anxiety and gave me 10 mg to take 45 min. before and said I could take the 5 mg 25 min. later. I don't want to be stumbling or too out of it, especially since the dr. Doing the procedure only gave me 5. Not sure how much to take and when.