I made my first yeast starter yesterday pout of 1/2 cup DME and a pint of water. It's been about 24 hours and I'm seeing very little airlock activity and a good chunk of yeast has already settled to the bottom. I had checked on it at about 9 hours in and again around 19 hours in and there was little activity either time. Is it possible it completely fermented already and I just missed it? I was hoping to brew today, but am now wondering what I should do. I'm not brewing a particularly big beer, should be around 1.054, so I probably could have got away without making a starter in the first place. Would it be OK if pitched my starter? If not, should I just give it more time or should I add more wort to it?