How can I prevent losing my voice?

hi. i have a big show that i'm singing in this weekend, and i noticed that i'm starting to lose my voice. (i have a cough and stuff..) how can i prevent this? tea? not talking..?

thanks in advance!

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Answer:
drink warm liquids like tea with honey. hot chocolate MIGHT help. cough drops maybe, turn on your shower really hot and steam upthe bathroom. then breath it in.

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Answer:
enough sleeping, drink warm water or something warm, never drink cold things or eat cold things and i think that's all

Good Luck

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Answer:
Hot lemon , honey and asparin. Sip when needed. rest.