How long did it take your newborn to get back to birthweight ?

So after losing the weight from hospital 7 days later my baby only gained 1oz and is ebf. Now I only have 5 days until I’m at the 2 week mark and I’m getting stressed out bc I never had this issue before. Baby nurses every 2-3 hours has a good latch and plenty of wet diapers. Anyone else going through this? I’ve never had to supplement formula with my other kids ;(