Yep my 11wk old DD is a sweaty mess most of the day. I use cool flannels, baths that aren't as warm as usual and yesterday we spent 10 mins every hour on the paddling pool. She is in just a nappy all day and night because her clothes just get soaked. The worst times are nap times and feeding time. Her hair gets soaked with sweat. There's not much more we can do though except hope for cooler weather!
I know that the weather is so hot but I am so surprised how much my child sweats. Just picked her up after a nap and it was soaking wet underneath her. Still BF on demand and putting her normally in just a vest or a summery onesie. Are other babies behaving like this and when should I be worried?