Similac question

Lauren • Wife, J • 3.2017 💕 Mom, A • 7.2016 + A • 12.2018 + A • 8.2020 + A • 7.2022 💕
I've been feeding my 5 month old Similac Pro Advance Non-GMO since birth. Recently my husband picked up Similac Pro Advance Non-GMO with 2-FL HMO. Are these interchangeable or do they have to be treated as two different kinds of formula still?