Clocked filament in nozzle

Hello everyone, I have issue with clogging filament in cooling part in nozzle. I’m using nylon filament which is completely dry. In my opinion, the nozzle get clogged ones filament is retracted. I clean it the nozzle a few times, but issue repeating every time. Is there anyone who know where could be issue? Coud it be the bigger temperature in the room because last time I use this filament it was 20°C and now is 24 °C . Any recommendation to change settings?
Sorry for my bad english.
I will be thankful for every recommendation.