The easiest way to practice the NG sound is on a walk: point out anything with "ring," "sing," or "swing" in it and let your child echo the word back to you. Keep each turn under a minute, say the sound clearly by lifting the back of the tongue and letting the air go through the nose, and stop while it's still fun rather than pushing for repeated perfect attempts.
A daily routine works well for this because it turns practice into something short and playful instead of a drill. Model the sound clearly, give your child a real reason to try it (pointing at a swing set, asking to hear a song), and move on while the moment still feels good. You can build a whole session out of five tiny turns: a silly sound hunt around the yard or sidewalk, a choice between two NG-heavy words, a pause right before the fun part happens, a whisper-versus-loud contrast, and one moment in pretend play where the NG word actually matters to the game. None of these need to last more than a minute.
Success doesn't have to mean a crisp, correct sound every time. Noticing the sound, watching your mouth as you say it, attempting something close, using the word during play, or simply putting up with one more model than they did yesterday, all of that counts. For a lot of kids, and especially for neurodivergent kids, staying regulated and willing to participate matters more right now than perfect articulation.
It's worth checking in with a speech-language pathologist if the NG sound is still giving your child trouble well past the age most kids have it down, if they start avoiding talking altogether, if people outside your family struggle to understand them, or if practicing the sound seems to cause real stress. An SLP can figure out whether what's going on is about articulation, phonology, motor planning, hearing, or language more broadly, and sort out what actually needs support.
If you want more structured ideas, the speech activities by age hub is a good starting point, or you can look specifically at more NG sound practice or browse general sound practice ideas for daily routines.
Little Words is meant as educational support for practicing at home. It isn't a medical device, an AAC replacement, or a stand-in for a licensed speech-language pathologist, pediatrician, early intervention program, school team, or developmental evaluation.