When do babies hold their own bottle?

 Some babies can hold their own bottle around 6 months of age. That’s not to say it won’t happen sooner or later — there’s a wide range of normal.

The average may be closer to 8 or 9 months, when babies have the strength and fine motor skills to hold objects (even one in each hand!) and guide them where they want them to go (like to their mouths).

So a range of 6 to 10 months is totally normal.  https://fancial.com/Collection/kidsbabies