14 year old son with often slurred speech and sometimes hard to understand

by Heather Reading
(Utah)

When my son was 2 years old he only had two words. Was in a preschool that helped him with that and other things. When he was in grade school he did not qualify for speech. They said he was fine. My husband feels his speech has always been slurred. I don't think that, but he does have some social anxiety and so when he's uncomfortable his speech is harder to understand. He also has a hard time with small talk because he is introverted and maybe because of his speech and his cadence. Is it too late to have him get help with clarity and cadence? If so, where would I go? Are there private places?