How do you taper off 20 mg of Lexapro?

I was on 20 mg of Lexapro for 6ish months. My psyciatrist said I could taper down to 10 for one week and then stop. I did this recently and 3 days later I now have typical lexapro withdrawl symptoms such as aches and pains and nausea and insomnia etc. It has been 4 days since I stopped the Lexapro and I am in a lot of discomfort that the pharmasist told me could last up to 2 weeks. Could this be done easier? For example, should I take 5 or 10 mg for ? amount of time. Was 1 week down 10 mg from 20 mg and then stopping too much reduction too fast? The lowest dose and fastest cessation is ideal, but I am having trouble functioning when I feel so bad physically. I would ask my psyciatrist but she is on vacation and will not be back for 2 weeks. What should I do? Please help! Thank you, Rinner/Corinne