Help! Should I start over?

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I need help. I feel like I should just quit and start over. This starter is 16 days old. I was feeding 1:1:1 and it was doing good almost doubling so I started to feed it 1:2:2 twice a day. I think I diluted my yeast population. So I went back to 1:1:1 every 24 hours, but it's just jot doing much. There a little bubbles, but I'm not sure if those are from when I stir it after I feed.

Should I just start over?

You're way ahead of where you'd be by starting over. 

It wouldn't hurt to start another - but - a different method may be better. Make it thick - whenever it turns to water (pretty close) - repeat. It'll go slow - then get faster as it builds. Plan on a few weeks if your lucky. Whatever the case - it never hurts to have another. Any extra can be tossed. Enjoy!