Breastfeeding Mamas

Mamas! How long are you planning on breastfeeding? My 2.5 month old has had formula a handful of times, and seemed to do fine with it. We give her pumped bottles, and she does fine with those too. I know at 4 months they can start being introduced to certain things, and with each month too introduce more and more. My sisters/sisters in law breastfed until 6-8 months, then did formula till 12 months. One of my friends breastfed 15 months, then had a newborn and just breastfed her newborn. I’m not the kinda person to go past a year- if they can get everything they need through food, then they don’t need me anymore. Do I go till my supply stops? Till teeth start cutting? I always thought the norm was till 6-7 months, then formula 🤷🏻‍♀️ let me know what you’ve done in the past/plan on doing!!