hi, can someone help me out here

Geodes other than matching weather and/or day, what helps a geodes to drop?

I have fought mobs left right and centre on these days and i can't get geodes to drop at all, before they used to drop all the time now they hardly exist?

and also do geodes react to TH or not, i have farmed with on my own dnc 99 and with a 99 thf friend who was putting TH 6-7+ on each mob and still no drops???

Did SE do something to the drop rate or something and does anyone have any suggestions??