When to introduce bottles

Jess • Married to the love of my life, totally smitten with our little girl and boy.
So, I know my husband wants to help with feedings. I have my breast pump and storage bags as well as Comotomo bottles which are supposed to be one of the closest to an actual breast. But, everything online says wait three weeks at least before introducing a bottle. 
My question is, if the bottle is supposed to work exactly like a nipple, do we need to wait three weeks or could we start using bottles sometimes now? What have you ladies found in your experience?
Thanks!