No more room sharing?

I've always loved the idea of my kids sharing a bedroom while they are small. We have a 3br home, and when baby #2 was born, we decided to keep the guest room as is and move baby into her big brother's room once she was sleeping a bit better.

But now she is two, and still waking between 5-530am. I usually go get her quickly so that her brother can keep sleeping, and frankly, I wouldn't mind a little more sleep! So I have finally caved.

Yesterday we moved M's toddler bed into the guest room so that when L wakes in the am, I can take my time going to her, to see if she will 1) fall back asleep or 2) entertain herself a bit.

Something about it made me sad. I think it was seeing him in an adult room, not a room decorated for babies. He is growing up so fast! I don't really plan to put a lot of effort into changing the room, since we're hoping to leave soon (!) but I'll have to do something so it doesn't make me sad every night!

Here's a picture of my big boy- in green shirt.