Last year I was diagnosed with MTD after struggling with my voice for a couple of years. I've been through speech therapy with the NHS which has really helped and I've learnt a lot. I did search on here for advice but didn't find any. I just wanted to post a summary of everything I learnt in case someone else tries to find help on this board.
Look after your throat
-Half a cup of boiling water every morning, inhale the steam through the nose.
-Drink plenty
-limit lozenges which can be drying
-limit caffeine
-treat any acid reflux
breathing
-breath is the power of the voice.
-learn how to breathe fron the diaphragm (see worksheet attached)
lax vox
This helped me immensely. Do for 2 minutes throughout the day (eg 5 times)
resonant voice therapy
-this focuses on the M sound made by humming, the sound comes from the lips not the throat.
-see attached worksheets.
-very helpful if your voice breaks or has 'vocal fry'