At this age, your baby needs tummy time to help strengthen his neck muscles which will lead to other physical milestones. Tummy time includes a variety of activities, positions and routines to keep your infant spending a significant amount of time on his tummy. Whether he likes it or not, your baby needs this time to practice lifting his head, then pushing up from the ground. Your child is now capable of holding his head and chest up on his forearm for longer durations now.
What you need to know
Between naps and nighttime, your baby can spend as many as 15 hours a day on his back. To balance that out, he needs to spend some time lying on his stomach when he is awake.
What you can do
Tummy time activities promote neck and core strength and make it less likely that he will develop a flat spot on the back of his head. When carrying baby against your hip, alternate the hip he sits on frequently. This will encourage him to turn his head from left to right.