It is pretty good for your first game. I wished it was longer.
What I liked:
The premise of the story is really interesting. It is both unsettling and heartbreaking at the same time which is nice a recipe for a horror game.
I think the character of the mother is well written. She talk and act like a real mother.
You can clearly see she is a genuinely caring person that love her children which make this whole situation even more tragic.
The soundtrack is great.
What I think could be improved:
Like some other people mentions in the comment, when you eat there is no sound effect. And I think it is a bummer when you consider what the story is about. It would have make the experience even more creepy.
Also, while I understand that they are not the focus of the story, the brothers don't really feel like they are real characters.
They are all interchangeable and what they say doesn't change as the story progress.
Also as a side note, I found a bug where I spawned too close from one my brothers when going outside and we would both get stuck. I had to restart the game but fortunately it was only the second day.