Didn't remove starter when feeding. Should I start over?

Toast

Hi All,

I'm trying my first attempt at a starter, it's been about two weeks. The instructions I followed said to add 1 oz of flour and water daily, never removing anything. So I realize now it's pretty underfed. The starter bubbles quite a bit, but doesn't really rise, and my attempt at baking with it resulted in bread that didn't rise in the oven 

Anyway -- now that I have a big jar of soup that has never had anything dumped, am I safe to remove 3/4 of it and start with a more normal feeding and removing scheme? My only concern was if there is a lot of undesirable bacteria in this jar because the old starter was never removed, and if so should I start over? Or can I just remove most of it and start over from there? 

Thanks!

I would remove most of it, give it a bunch of food and water, and see what happens. It'd likely be apparent to the eye or the nose if something was amiss. Most likely it'll just be weak, perhaps too weak to do much with.

Good luck!