Many boys develop a layer of baby fat in front of the pubic bone. This usually happens from about 3 months to 2 years. Because many babies’ penises are sitting in a lower position they can become partially to fully hidden during this time.
One should get into the habit during this time of pushing down the pubic fat which causes the babies penis to have a false erection once a day, (do not pull or touch the actual penis just push the fat at the sides).
This will keep the Penis loose and clean. This is normal and once he is older it will come out properly once he loses his pubic fat.