Our LER5636JQ0 Whirlpool Dryer takes many 4-5 cycles to dry clothes, I cleaned the lint trap from the rear of the dryer and purchased a new vent system so all that is clear. There is heat and the dryer is tumbling. This seemed to have happen overnight. The dryer is electric and has had not a ton of use it sat unused for a few years and was working fine for two years after that just one day it started this. Any help would be appreciated.

Open the unit up and remove the blower housing. Clean the lint out of that area and check to make sure the blower is working

Make sure the clothes aren't dripping wet when u put them in