Were you keeping a check on the temperature constantly? There is no such thing as an immediate cure for any fever or temperature spike for any child, so you have to constantly watch over the child and monitor the fever.

Constantly sponge the baby all over the body, especially the head, to lower the body temperature and if temperature spikes up, make sure you have one of those bullets which can help lower the temperature drastically.

>39°C/102°F is the limit for children when they have a fever, this will normally spike up during night at around 7pm and during bed time, which is because of the atmosphere at night, and due to sleep.

For babies and infants, fevers can be quite dangerous, I do hope your child is alright.