The easiest way to avoid soy is to just not use packaged foods. It's a lot easier to just eat fruit, veggies, eggs, meat, etc.
If you feel like you need mixes or processed foods, why not make your own some weekend or when you have a bit of time? You can make pancake and waffle mix and bag it so you can just add liquid when you need it.
It doesn't take long to make chicken nuggets from scratch and freeze them. You can buy stir fry chicken that's already cut up to save time. At least you'll know you're not eating some neuro-toxic food additives. Chicken nuggets are loaded with chemicals.
If you're running low on time, enlist your husband or 12 year old for help, either with the food prep or looking after the little ones.
I really never spend much time in the kitchen at all and since I stopped eating junk food, it's a lot easier. Stir fries, salads with rice or millet and veggies, egg and veggie dishes, etc can all be done in 10-30 minutes. Yesterday I watched a video of someone making "energy soup" which is a raw veggie soup. It took about 6 minutes for four servings! Packed with nutrients too.