Formula feeding

My daughter is 24 days old. Shes been really sleepy and will sleep at least 3 or 4 hours straight. Should i wake her up every 2 hours and give her 2 ounces of formula. Cause when she wakes up hours later she will drink 3 or 4 ounces. Am i overfeeding my babygirl.! ?

I dont wanna go to the pediatricion and she tell me my daughter is gaining to much weight.

What do you guys think. I know feeding should not be a schedule. And feeding is a demand. Am i doing the right thing.?