Protect your filament from moisture with a Silica Gel desiccant bag. A pouch can absorb up to 30% of its own weight in moisture.
100mm x 150mm x 40mm
Regenerate
The silica gel can be regenerated in the oven at a maximum of 80 degrees Celsius.
This will take some time. From the outside, you can't tell when it's finished.
However, you can use the scales to determine whether your weight has reduced again.