T, I'm sorry he didn't acknowledge your special day yesterday. I know it hurts and was a disappointment. He's further along than he was last year and maybe this time next year, he'll be even further along.
I have read that watching fish is a very soothing and relaxing way to bring the blood pressure down. It sounds like your little one is already enjoying the tank.
I hope your son has a fantastic birthday today.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.