I would make sure your fan is moving sufficient air. Maybe the bushing is wearing down and it’s running slower.

Looks like your heat break unscrews from the heatsink, maybe some fresh thermal paste to help the transfer. Some types can turn into insulators if over heated too much.

The clogging I had was a result of creep because I was turning off the machine before the cooling fans could finish bringing the temps down. After the fans were off the heat would move up and swell the filament. After I started leaving it on longer and not using emergency stop for print failures my clogging went away.