small step , but giant leap!

My 2 year old son has recently begun to drink  from his straw sippy cup by himself!  Before I would've had to hold the bottle all the time because he did not have the coordination to keep it and bring it to his mouth, but now, praise GOD, he holds it and brings it to his mouth!
He feels so independent! Everytime I try to help him in case the cup tips too far or if he drops it, he fusses and refuses to let me help him.  He would pick it back up, readjust it, and continue drinking from it! 
He hasn't gotten the hang of holding it with two hands because his left hand is the weaker hand (although if i place his other hand on the handle he holds on for dear life! lol, but eventually the right hand pulls it away)  so he holds it predominantly with the right hand, but he has to begin somewhere right??
I am so very proud of my son, who is fighting so hard to show his independence.  May God continue to strengthen him!