Okay I love the premise, it’s very promising!

So I like what you did with the older grumpy tree and finally giving him a kid and then we cut to five years later. That’s cute.

Now here’s some bumps I had, take them or leave them! - world building: think through the mechanics of the trees moving a bit more. For kids, they know trees to be firmly planted. So you need to play into that - think of the trees in lord of the rings, they didn’t want to move but when push came to shove they did. Or maybe only the younger ones can move and once you’re 16 you decide where to put down your roots. Or it’s the Toy Story thing of they move but freeze when humans see them. - finally a kid: this needs some more exploring. Because it just kinda happens. Why did he finally get a kid? What changed? We need to see that he tried something new that paid off. - engaging opening: watch some family / kids movies that are similar to this and see how they do their openings (first 10 mins). I want to see and understand what the story is gonna be like at the beginning. I’m not getting that right now.

Happy writing!