I started my sourdough starter on 6/15/22 with 1/2 cup of fresh ground whole wheat flour (hard red wheat) and 1/4 cup of bottled water. The starter was very active the first day or two, and started to develop a clear liquid on top (I assumed this was hooch). around days 3-4, I noticed it started to slow down and didn't produce as many bubbles, so I did not feed it and gave it a chance to catch up. Today is one week since I started it (6/22/22), and I still have not seen the starter rise. I am giving it daily feedings with KA unbleached AP flour and bottled water. It smells a bit sour, but not overwhelming. Any advise?