This 1st December Christmas breakfast is an invention to show off on social media by the sounds of it.
I've never heard of it before. Luckily our kids would chant "too soon"
We don't even get our tree until well into double figures December date.
We tried reindeer food once and managed to fuck that up! What happened to a sherry and a carrot, that we could have convincingly pulled off.
Never had, never will, do Christmas eve box either. Ours get plenty as far as we are concerned we don't need to keep adding more and more and more. We try to keep a bit of humbleness around Christmas it's really not, for us, just about stuff and more stuff and more stuff. For starters if they did ever whinge they would get the (stock) overconsumption is killing the planet speech.
Saying all this we have much magic in cooking a dough ball dish and gingerbread house on Christmas eve, happy feel good TV, they have always been suspicious of Santa and we never confirmed his existence, never did the elf thing (again not a tradition invented in the USA in the 1990s assuming purely to sell toy elves plus we couldn't convincingly answer the "surely the elves would be needed at the north pole this time of year" questions). So even with all the stuff we don't do we manage to have magical, cosy, loving, thankful, fun and happy Christmases.
So no OP. You are most definitely not a rubbish mum. Well no more than us. Christmas eve you can have blankets, film, game or two, bit of cooking, bowl of satsumas, Christmas music on radio, the excitement of hanging a stocking up. All you need. More than enough.