Take any recipe and substitute e.g. Butter swapped for oil or vitalite, milk for coconut or what ever milk substitute works for you
I am lucky that my cows milk intolerant DS can eat goats products so use Goat cheese - not sure if that is possible for your DC
I have an old Dairy Cookbook of my grandmothers and have made many things out of it dairy free through substitution
Another option is look for vegan products as they are automatically dairy free - or if you want to cheat with ready made - check the supermarket own brands and value ranges as they are often dairy free as they use cheaper ingredients
My 15 month old eats dairy free by default for most meals because of DS and that I won't am too lazy too make 2 meals and she does have whatever we are having quite happily
Tonight's dinner was sausages and homemade oven chips with grapes as we are an ill house this weekend and I didn't have the energy for anything else, tomorrow I have some pork mince that I will turn into a cottage pie (sneak in loads of veg into that too), will prob do a beef stew later in the week, and one of my working days I have some battered fish from Lidls which will be served with potato/sweet potato wedges and corn.
I do a 1 part peanut butter to one part sweet chilli sauce over chicken pieces (cheating chicken satay as its known) but that might be too spicy for a reflux DC? or I like cooking tangine dinners as find them flavoursome without too much spice?