Ming from Agents of Speech explains how to get autistic children to communicate: give them what they want first, then gradually require small actions like eye contact or a tap to get more. Start with puzzle pieces freely available, then hide them so they have to ask for help.
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You hear a lot of therapists online will say, make it difficult for them to get access to it. Put it on top of a shelf so that they tell you, like, create obstacles and whatnot. For me, I don't really like it. I like to be more active instead of trying to create difficult situations. For me, I like to give, give, give, give, give, give, give, give. I keep on giving, and I slowly increase the demand like that. I feel like that's a better way because it creates a better relationship between you and your kid. How you create communication opportunities is that maybe, you know, like if your child likes. Likes puzzle and you give the first piece, you give the second piece the third piece, you hide it. And then they have to, like, at least touch you or look at you and you'll tell them where it is, right? Or they might just have to follow your pointing or they. You teach them to tap you and then you give it. So it's better that you give in the beginning for free, and then you create that opportunity.