maybe just liquify foods or cook softer foods instead? i used to think that i had to eat solids all the time (and that it wasnt acceptable to basically make baby food for yourself to eat as an adult, but i was wrong
) and i really struggled.... until i gave up earlier this year and let my tum get whatever food consistency it wanted and i feel soooo much healthier. my pains are less and my blood works shows that my vitamin and mineral levels are the best they've ever been so i wish i'd given in years ago!
and in soups and mashed foods its pretty easy to boost the calorie content by spiking it with oil or butter, its kinda harder to do this with solids.
at the moment i pretty much live on porridge and soup and take a daily multivit and mineral tablet to help fill any gaps in my nutrient intake... and i expect you'll get the same dietary info from the gastro guys that i did- i was told to avoid insoluble fibre as it irritates the lining of the intestines and makes pains and spasms worse, and tends to hang around for ages cos its so indigestable so makes gastroparesis symptoms worse. and was told to eat more soluble fibre as it pulls water into the intestine and helps prevent constipation (and all the horrid symptoms that come with the slow transit). was told to avoid acidic foods and drinks unless they were with another, non acidic, food or drink and so it wont be so hard on the stomach. told to avoid fruit juices as they often make acid reflux worse and can make the tummy ache.
it was also suggested i follow the FODMAP diet but many of the foods disagree with my tum so we scrapped it but it may help you
i was also told to keep a food diary for a few weeks and note down everything i ate and drank and my body's reaction to it so we could figure out the foods that my tum didnt like so we could eliminate them from my diet. this helped me tons as i was able to cut out the foods that give me the most symptoms and so over time my tummy pains have reduced. it took bloomin ages to do the food diary thing but it was definitely worth it
i still get very colicky pains that i find baby gripe/colic water helps a fair amount. i'm currently using Boot's Gripe Mixture and its made my evening much more tolerable tonight (as my pains are quite bad today), maybe gripe water may help your pains a little while you wait for your appointment?
i got prescribed domperidone to help my tummy empty time and you can buy this over the counter if you get desperate and want to give it a go, you can do the same with buscopan (that i take to ease the pains from the spasms). i also take pregabalin for my tum pains and the pains that get referred along my nerves to other parts of my body which hurt like heck, but these make me pretty drowsy so i need to be a bit careful about how many i take in a day
hope your pains ease soon