TisforTucan Sorry - I forgot to give you the drinks and food suggestions.
Besides drinking through a straw, here are some drinks that have helped others: full sugar flat coke (if you don't find it too acid), ice lollies, frozen smoothie ice lollies, the juice of tinned fruit, Vimto, Lucozade, apple juice, Ribina, Dr Pepper, soda water, Elderflower water, tonic water, ice cubes, Iron Bru, lemonade, lemon squash, orange squash, orange juice (if not too acid), fizzy orange (M and S has been recommende), 7Up, isotonic drinks, sips of strawberry or chocolate milkshake (maybe soya), fizzy water, apple juice, Robinson's fruit drinks, Rubicon sparkling mango drink , raspberry Lucozade sport and frozen ice cubes of flat Lucozade sport. Also, pink lemonade , cloudy lemonade and Sprite. Foods of a sort include tinned fruit, cuppa soup, nibbles of crisps and chips, cheap ice cream, Scotch pancakes, bagels and biscuits, potato smileys, minature salty Yorkshire Puddings , dry cereals and slices of melon and mango. Protein drinks have also been mentioned.