4 mo old already

Where does the time go? Yesterday was Zackary's 4 mo birthday. He went in for his check up today and is now 14 lb 9 oz & 25 1/4 in. The day he left the hospital he was 6 lb 9 oz, so he's gained 8 lbs in 4 mo. He goes back May 26th for his 6 mo appt