Quite often I find that the new menu online is not the same as what is offered on board despite what the app tells you. I travelled MEL-EBB-MEL in F recently, and despite the new menu showing a day before each departure, the menu on board was different except for the DXB-MEL leg. This happens to me frequently wherever I fly. So you really don't know what you will get.

As I find this more often than not, my advice is that it might be best you accept this and assume that the flight will be an adventure with a mystery menu!!

Good luck, I hope your actual menu is to your liking!