Starter issues

Starter issues

I recently bought a sourdough starter kit… I followed the instructions exactly and it’s been about a week.. So far my starter looks really good but seems very thin… I just started my adventures into breads a few months ago so I asked a friend if my starter looked good.. She told me to try and bake with it… My bread has been rising for almost 2 hours but hasn’t really doubled.. Could it be my starter..? Any advice would be very appreciated… Thank you..

 

Source: Fresh Loaf