I would suggest not to be too anxious.... give time for the medication to work.
Meanwhile.... for fungal infection, it is important to keep the area of infection dry and ventilated....
Fungal infection will thrive in damp/moist and warm condition (eg, feet with socks and wearing shoes will worsen fungal infection of the feet)
The weather these few days will not be helpful.
Keep your baby in aircon room if possible as their air is dryer.
Wear mittens for the baby so he/she will not scratch the infection and spread to other areas.