am i bad mom?

k

hi everyone. so I have 4 yr toddler and 2 month baby. from beginning we had problem with latching my breast we fighted a week, I wanted to breastfeed so badly but once we visited our pediatrician he lost almost 1 pound he wasnt gaining weight so I started pumping now I'm pumping almost 3 months. but I'm so tired from it I really wanna make it up to 6 months but it's so hard to take care of toddler and a newborn and do everyday tasks.do u think Iwill be bad mom if I will feed my baby with the formula ?