I have always planned meals and been quite organised in that way. I pre cook pasta for the week for the kids and chop ved for the fridge for snacks and dinner/lunches.
I freeze a lot too for nights I know we will be busy - it goes into the fridge that morning so a quick reheat job and dinner is done.
Things I found freeze well include mashed potato (reheat and revive by mashing a bit of butter through it) Curried egg freezes in sandwiches well and doesnt smell once defrosted ☺
If I cook during the week, it is always enough for another few meals and the leftovers get frozen for a quick meal.
Mornings are crazy with 3 kids so I make lunches the night before, have a shake (i bag my oats and protien for a few weeks) so just have to add liquid, blitz and go. I also always have tuna and crackers on hand to avoid getting hungry and eating junk!