Girls, it's 4 am now, we have an appointment with the doctor only at n…

Girls, it's 4 am now, we have an appointment with the doctor only at noon, could you please tell me... I started with sore throat, on the third day I had a fever, today on the fourth day my son got sick, since morning he has phlegm like water, puffing up with Acvulor Baby and sucking out with a syringe, but it doesn't help right away, since noon I haven't slept properly, by 10 pm he started crying and I put Nazivin in him, we fell asleep somewhere around 2 am, now we go again with a runny nose and still a temperature of 37.5, when should we knock down? Can we give Ibu