My 3 year old is quite behind on his speech development and additionally it's going to make him extremely difficult potty train. This could be due to hearing problems. I live in the UK and the hospital (NHS) Have told me we might be waiting up to 6 months just to book an appointment to have his hearing and ears tested (due to covid). I find that absolutely outrageous, a child's development at a young age is EXTREMELY important. Is there anything I can do?