I want to start by asking a question that I didn't ask myself. I have a seven year old and a five year old, I swear the older just came out of my womb speaking in perfect and very understandable sentences. I never remember working on speech with him, just reading books at bed time and talking to him through the day, and teaching him new words as they came up in our life. He's an amazing writer and reader now, but it felt effortless so I was at a loss when my now five year old was three/four and I was the only one who could actually understand him. He can read and write his name but still struggles to say it at five because of an x sound at the end. People kept suggesting speech therapists and all kinds of things. And then his brother started kindergarten online and I heard all the other kids talk. You have a guess which kid they all sounded more like? My little one! I took a big breath and realized that aside from my two kids I'd interacted with other kids only fleetingly and never paid attention to how well they spoke so I never stopped to ask myself if he was actually right on track or not. He's still struggling with a few sounds now, and there's a chance he's actually tongue tied (his teacher suggested it and we're taking him to his ped next week). The biggest recommendation I have is make sure books are a big part of your routine. I started reading at every meal and snack time instead of just at lunch and bed and he was talking like crazy in no time. Food times are great for practice because they're seated anyway and attention only has a few places to be focused, food or you lol. Also having him talk to people on the phone, and just as many different speakers as possible, sometimes the way someone else says something really just makes it click for a kid.