how are you tracking feeding ?

hi everyone, ftm i just had my daughter on friday and took her home this morning. These past few days we’ve been having a hard time keeping track of the frequency & amount of when we feed her between the two of us. We are bottle feeding and she’s on these special calorie similac bottles due to low birth weight and there measured in ml. We’ve just been writing down time / amount on a piece of paper between us but curious on how everyone else is keeping track. Wether your breast feeding , pumping, bottle feeding or a combination i’d love to know how everyone is tracking / planning on tracking. Please no judgment! I’ve really been struggling and could really just use any advice or kind words, thank you. 💖