Summer I'm copying posting my earlier post about what to do with food refusal incase you didn't see it before.
Summertime there are different schools of thoughts on what to do in cases of flat out food refusal.
Some families 'sit it out' that means the child has to sit at the table and is not allowed to leave until the food is eaten, even if it takes 10 hours. Or they will physically follow their child around d with the food abs the child will not be allowed a minutes rest until the food is eaten, will not be allowed to sleep/watch telly/go on their phone. Life stops until they eat.
This does work well for some kids and you tend to only have to go through the pain barrier of doing this once or twice before they realise you won't back down and it's easier just to eat the food to get you off their back!
For other families having set times for each meal and snack and then setting a timer for say 30 mins to eat it works. If after 30 mins the foods not eaten they get presented with another alternative (ideally higher calorie) if that's refused you pack them and the food up and head to a&e.
Hopefully they will then eat the food but if not you see the a&e trip through and make sure all the checks get done.
Once the foods down in front of them, change the subject to anything else other than food. Do not discuss the food, do not answer any questions related to the food and keep replies very neutral
'This is exactly the right amount for you'
'You can trust me, I've given you exactly what you need'
'Pick up your fork and take a mouthful, how's your friend so-and-so getting on? Did I tell you I saw her mum last week?' Etc.
My dd responded well to 'once and then' so once you've eaten your snack and then we can go to the park/play a game/go to the shop.
I also took my dds phone off her initially to get FBT established, this help as an incentive to get her eating but also I think helped her mental health overall as she was looking up all sorts of crap on it.