Help! My 4-year-old son has just started Reception and takes a packed lunch. Although as a family we eat a very varied, healthy diet, he is currently a fussy eater and will only eat cheese & Marmite sandwiches for his lunch. I have tried countless other things, but to no avail ? they always come back with one small bite taken out of them. Any ideas on how to wean him off his fave filling? I don't mind c & M one or 2 days a week, but not 5!