Yes. Each code you redeem starts its own separate Baby's First Year subscription.
Two babies, like twins: redeem one code for each baby. Each subscription shows under your account with that baby's name
Two codes for the same baby: each code still starts its own subscription. Codes can't be combined into one longer subscription
Already have a Baby's First Year subscription: a gift code can't be added to your current subscription. Contact Customer Support before you redeem, and we'll help
If you received two gift boxes for the same baby, contact Customer Support before you redeem the second code, and we'll help.