in a child needs to be effectively controlled with paracetamol
and/or tepid sponging as this age group is susceptible for febrile convulsions
I get an impression that the only aim is to bring down fever as your husband is insisting on paracetamol , that too without knowing the dose and top it all three times a day.
Please never experiment on drugs when you have no idea how they act and what they can do to the body.
In all probability your baby has an established lower respiratory tract
infection which needs to be treated with antibiotics and anti pyretic.