I thought once he started speech therapy his language would explode immediately. Now my child is just acting more frustrated with his language skills.
Practice, practice, practice! Now that your child is being asked to use their language more often, they are more likely to get frustrated since you are making them work harder to get what they want. Now, instead of pointing and using gestures, your child is being required to vocalize and use more words. Continuing to model language for your child, providing choices in which he/she is required to use language, and encouraging your child to use their words to request items will all help promote continued language use. Repetition is key, and remember, building language skills takes time and practice!