Hey mama! Dark green poop is actually super normal sa formula-fed babies, especially around that age, a few of us noticed the same thing with ours at 2 months, kaya don't worry too much! As long as baby's active, feeding well, and walang fever or signs of discomfort, you're good na. Since this is baby's poop color though, best to mention it quickly sa pedia just to be sure everything's on track, pero honestly maraming babies go through that phase at walang problema. Congrats sa new baby, first-time mom ka pa lang kaya natural na may mga questions, you're doing great!