REALLY REALLY long time? haha!
I don't know if you've thought about this.. but 10% of 16 hours (The average amount of time we're awake) is 1.6 and that's almost two hours!
Think about this.. we have no problem giving 10% of our money (Most of the time) But when it comes to our time.. 2 hours is out of the question.. and time is MUCH more precious to the father than money.. MUCH MUCH more precious.. I'm not saying this to rebuke you or anything brother.. but consider this.. should we be congratulating you for something you're supposed to do already? Dang.. if I got more cheering for every time I gave the tithe or did something my parents told me to do.. I'd be happy all the time! Brother.. again.. I'm saying this all in love because I see you're on an awesome road to intimacy with the Father.. that's great!
I just wanted to challenge you to do that everyday! And remember.. the Lord delights in us even in our failures and our weakness.. there's nothing we can do to displease Him as long as we're trying.. even if we fail to spend a desired time with Him.. He cannot love us more or less!!! Favor CAN increase.. but He will never love you neither more NOR less! Brother I will keep you in my prayers.. Although it is true that you are doing GREAT for your age.. just don't take your eyes off of the Father.. and don't let the praise of man tickle your ears.. if anything.. do what Jesus said and don't let your left hand know what your right hand is doing.. This is the eternal mindset!!! To do things for the kingdom to come! We become less in this world so we can be GREATER in the next!!! Brother.. God bless you and continue to pour out His Spirit on you and may He continue to visit you and remain with you in sweet intimacy!

Blessings!