Since speech is delayed and have ear problem, consult ENT SPECIALIST. Mainly to check hearing. This is foremost important. For wax you can use waxsolve for minimum 5days followed by syringing if necèssary.
Next Steps
Audiometry is done
Don't forget immunization , 'hygiene, good nutrition,and making him active like playing with ball.
Take care of mosquito to protect from malaria and dengue. stay safe at home to protect from Covid.
Health Tips
If any need consul twith prior appointment. .