Weird question, has anyone started breastfeeding an older child after having a second baby?

I know how unusual that sounds. I am planning to breastfeed my baby who is due in June. My first will be 14 months and I did not breastfeed her long at all (although I wanted to, it's a long story). I'm very lightly entertaining the idea of giving my first baby some pumped milk atleast when the second one comes. How weird is this haha