My starter haven't risen since the second day

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So I started a new starter about a week ago using all King Arthur whole wheat flour. Day 1 I mixed 100g flour and 100g water at 90F. day 2 I discarded all but 50g of my starter and mixed in the same 100g of flour and water, the water being around 92F. For that day 2, and especially when I checked on it the next morning, it rose tremendously; if I had to guess it at least trippled in volume. Day 3 and up untill today (day 7/8, not sure) I have followed the same feeding schedule as before and I have had barely any rise. I always see tiny bubbles on the sides and surface and it smells and tastes like it's active, it just isn't rising. If anyone could offer any tips I'd greatly appreciate it.

P.S. the entire time the starter has been in an environment at ~66/67F to ~72F

Tons of posts on this lately so I am giving you the Coles notes:

1. You are diluting the beasties by feeding too often. 
2. Stop feeding and stir. Let the beasties grow. 
3. Start feeding when you see lots of activity. Ie lots of bubbles. 
4. Only feed once it starts receding from peak. Your starter will dictate its own schedule. Later, you can play with that schedule by feeding it more or less. 

Oh and you don’t need water that hot. Room temperature water is fine.