Teach your child to swim on their stomach and breathe on their back
The technique of rolling onto the back to take a breath:
This technique will allow your child to keep their body position horizontal, which is most effective for swimming.
Once your child is comfortable doing 3-4 meter of “Reach and Pulls” with their head in the water, it is time to teach them how to breathe on their back to catch their breath.
Breathing on the back instead of lifting the head up will allow your child to keep the momentum and efficiency. In addition, it will allow them to remain calm on the back and stay there as long as they wishes to catch their breath. This way is also transitory towards the learning of the bi-lateral breathing which they will soon learn for swimming the Front-Crawl.