Question for parents of young babies on G-tubes

Both my twin daughters got G-tubes placed before coming home from the nicu. They are 4 months old, or 9 weeks adjusted. One of my babies stopped taking her bottle in the nicu so that was her reasoning to get one. Well I discovered today the problem she had was A they changed her formula to emfamil neosure and it tastes like drinking an iron supplement and B the nipple on Dr Brown bottles cause her to gage. Today I tried a different bottle and she took 3 of her 4 bulluses by bottle and she drank the entire bottle each time. If she will take all by mouth, how do I go about switching from a G-tube feeding schedule to a bottle? The big question is her over night continues feeds. Do I give almost all of it during the day? Do I wake her up at night to give her bottles? Or would it be better to keep a continues feed going at night for a bit while she is transitioning? And answer or tips are appreciated. I see their pediatrician this week but I want to start her sooner then later on switching over