I could use some help with my story

I think the first question to ask yourself is whether or not the OS really changes.

Also, if you have a Steadfast Be-er and then a change Do-er (who becomes a be-er) that could be a steadfast be-er who experiments with being a do-er in the middle. That’s fine.

You should look into Life is Beautiful. That might be two stories glued together, but I don’t know.

It 'tis. Also see It’s a Wonderful Life for evidence of both Backstory and Forestory within a single work.

Does it have more backstory than Iron Man, or is it more pronounced or anything?

Not sure the comparison, but Iron Man is another great example of backstory working as a separate storyform.