Baby not pooping

Liana

My 2 months baby will always have poop in her diaper every time we change them. She rarely drinks formula. Yesterday morning (6am) I was so tired so my husband fed her 3oz of formula. After that, her poop was still regular up until 2pm. Since then, she has not pooped until now, 6am the next day.

I am very worried. Is still normal?