my daughter hated it...only did it for a few minutes at a time. until she reached the point that she could easily roll from her tummy to back and back to her tummy now she loves being on her tummy.
My son uses to hate it so I used to only do 5 mins about 6 times a day he started liking it.little by little also try putting baby in a boppy that also helped with my son
my daughter can't stand tummy time so I do about 5 minutes here and there she has bad acid reflux but the doctor said some kids love others hate it and that how long you have them on their tummy depends on the baby