In monsoon, make child comfortable in neutral environment. Wear full sleeve cloths and bottom which cover most part and free air passage but clothes material is cotton; so there will not be sweating and protect him/her from mosquito bite. Yes you can use fan and if needed AC too, but for instructions for AC use are
1) Intermittent use ( means if room is enough cool switch off and switch on if needed. Not continues
2) Set AC temperature between 27-30 degree centigrade. (For adult also it should be more than 25 degree centigrade)
3) do not keep child in direct air flow of AC.
4) Room temperature should be maintained and keep at comfortable.
5) never switch child surrounding temperature too quickly. ( Means never keep child in full AC with low degree temperature following high degree temperature, mostly in summer). This will harm body more.
Health Tips
exclusive breastfeeding for 6 months.
skin to skin contact( Kangaroo mother care) as much as child comfortable.