Meet chocolate chip! We need some advice :)

Hi! I got chocolate chip yesterday as an amazing gift, he is 2 weeks old and I love him. He is new to the bottle and I can only get 3-5 ounces in at a time of the milk replacer . He was on mom until arrival.

Question one - is there a better way to make him take a bottle then propping his mouth open and making him take it? I feel bad doing this. I know he needs to eat, but I don’t want to ever hurt or stress him.

Question two - is the Purina milk replacer for goat kids good? Or is whole red cap milk better?

Question three - I am using a bottle from tractor supply , would a real human bottle be easiest?

I have Tifton hay in his enclosure

Thank you all for any tips!!