I have lidl Turkish yoghurt, which because it is not low fat, contains suffice to to keep me full until lunchtime - although sometimes I feel peckish mid morning and I might then have a small amount of low carb protein such as a few nuts, a small piece of cheese or something like that. I also sprinkle some ground flax on it to up my omega 3 levels, or a few rasps. At weekends I have eggs, or bacon and eggs. Again the proteins help keep you full.
Lunches, especially pack ups present a bit more of a challenge, but I do make soups, all sorts and usually these have some protein in them such as beans or lentils, or even cheese, though beans and lentils do have carbs so limit the quantity. I also pack up salads a lot. I'm not advocating lettuce every day as that would be just too boring, so I will use any veggies either cooked or uncooked. I also have raw veggies with dips. Perhaps some berries too.
Bread is the convenience carb I miss the most. I have tried the lidl high protein roll which is low carb, which a lot of people eat successfully but I can only have about a third of one when my bs is very low or the spike takes a long time to come down. We are all different and it is only by testing that we can see what our bodies can deal with successfully.
Good luck.
Sent from my iPad using DCUK Forum mobile app