I use half the coconut flour I think I need, and add extra eggs, tapioca flour, and/or guar/xanthan gum when I bake with coconut flour. You can always add more coconut flour, but most recipes use a LOT less than it seems like they'll need. The batter should be almost runny by comparison, because as it sets, it will thicken substantially.
However, one of the things I found most effective was letting go of the idea of 'substituting' breads, cookies, cakes, etc. at all. You see, I think we get habituated to those things -- especially if we get them when we're young, and then it becomes difficult to let them go. I decided that, since most "substitutes" didn't really 'represent' well, it was probably better just to find alternatives.
In place of pitas, try "inside out sandwiches" -- slices of meat, poultry, etc., with salad fixings shoved or wrapped inside. (We will purchase a whole fresh pork shoulder or roast beef, rub/roast it, and slice it super thin, then spread it with home-made mayo and mustard and wrap it around baby lettuces).
In place of tacos, roast up some sweet potatoes. Scoop out the middles, leaving a 1/4" layer of potato against the skin, then pop them back into the oven to crisp (like making potato skins) -- then fill them with home-made taco meat.
In place of pancakes, whizz up 1/4 cup of cooked pumpkin or butternut squash in the blender with 3 3ggs. Pour into a buttered pan and let cook until set -- flip to brown the 2nd side, and serve with butter and cranberry relish. (this makes about a half-dozen).