DS is 14 weeks old and I'm just wondering if he's supposed to have tummy time every day. I did used to put him on his front on the play mat for 10 mins a day when he was much younger, but recently he doesn't like it and so I've stopped. It must be a good few weeks now since he's had done it on a regular daily basis. How old was your child when you started tummy time and how often did you do it. DS has very strong head and can hold his head up very well when he's sitting around but cries when I put him on his tummy.