E is fairly indifferent about tummy time. She will let me put her on her tummy 45 times a day for maybe 1520 minutes a time. Here is the thing, she is sooo lazy about it. She may try to lift her head up and look around for 30 seconds then she gives up, lays her head down and licks and sucks on her hand for the next 14 and a half minutes. I don't feel like she is getting stronger.
DD1 HATED tummy time, she would cry and scream but she would also kick and thrash so she was getting a work out while mad.