Welcome & Congrats!
3 days is Great!
Keep it up!!
Im only in my second week, but personally found the first 3 days without a doubt the most difficult. (But maybe you already know this?)
I know we are all different but IMO, if you were 'on it' every day/night like me and U can go 3 days, you can keep going as long as you desire.
If you get a bit rocky, sign in and read SR for inspiration, its working for me
Stay Strong