Hello, have you tried nebulising saline through the trach? This helps to keep the secretions moist thus making it easier to cough them out. The other method of dealing with this is to wear some form of humidification over the trach at night. The trach tubes get gunged up with thick dry secretions and if you can keep them moist it will alleviate the problem.
Thinking of you, Tammy.

Caregiver/advocate to Husband Kris age 59@ diagnosis
DX Dec '10 SCC BOT T4aN2bM0 HPV+ve.Cisplatin x3 35 IMRT.
PET 6/11 clear.
R) level 2-4 neck dissection 8/1/11 to remove residual node - necrotic with NED
Feb '12 Ca back.. 3/8/12 total glossectomy/laryngectomy/bilat neck dissection/partial pharyngectomy etc. clear margins. All nodes negative for disease. PEG in.
March 2017 - 5 years disease free. Woohoo!