Dropping a bottle or out of routine?

Hi, I’m not looking for medical advice, I’m just looking to see if this is all normal for a baby, she’s my first so I have no idea! We’re currently on holiday in the UK with my 9 month old. Since day 2, she’s dropped her bedtime bottle of formula. She absolutely will not have it, she refuses to put the bottle in her mouth and most often gags if we try to do so. She shakes her head and turns away from the bottle and refuses to eat it, then she’ll just go straight back to sleep (as she’s woken up for this feed) and will sleep through until the morning. At first we thought it was just her getting used to a new place, new smell etc. but it’s been 3 bedtime feeds now that she’s refused but she’ll sleep happily without it until the morning after spending the first night of the holiday awake every 30 mins. She has 2 meals a day, but she doesn’t eat much at all still even though we’ve been weaning for over 2 months. Is she just naturally dropping a bottle? She was on 4x bottles a day but now just 3, morning, lunchtime and evening. She’s also not drinking a full bottle like she used to, she’s leaving anywhere between one ounce and 5 ounces a bottle but will sometimes randomly have a full bottle. Thanks in advance!