Hi,
Wen it's normal fever dont worry.
Of course you can give your child lots of water and vitamin c like amla or lemon in juice forms,Make sure to buy them this sanitizer gels to keep away from germs .This is what the suggestions given to our school students in dubai.I work in Our own indian school as a French teacher.Hope this information will help u and my son is also in Kg2 ,

Iam sending him to school.