I was going to make a berliner weisse a last thursday, but the starter I made wasn't showing any signs I usually see in my lacto starters. I made it on 11/4 and today it has a nice pellicle on it and smells sour. I'm going to brew on 11/23 which is over 10 days away still. Would it be fine to just leave the starter as is and still use it? Is it ok for it to sit around for so long?