New to starters--Unsure about feeding

I have a 6 day old AP flour starter.  Today was the first day I switched over to AP flour and water from rye and orange juice.  This morning I fed him and he doubled and collapsed in 4 hours so I fed him.  Ive been watching him and I noticed that he's doubling again and it's been about 4 hours.  This has all been happening at 68 F.  

Should I feed him again, but switch from a 1:1:1 to a 1:2:2?

He smells like alcohol (like a fuzzy navel lol) and yeast, and is nice and puffy so I don't think his vigor is due to leuc or other flora....but I could be wrong.

Thanks for your help. :)