[FP&A] How can I make the most of my situation? Is there a downside? Is this progression normal/fast?

I started working for a somewhat large bank in FP&A, right out of college. I've been here for about 6 months now and I'd like to say I've done an exceptionally well job so far. I feel like I've really established myself as someone with incredible work ethic, initiative, and someone who's always looking to improve. This has all been echoed by my manager during several 1-on-1's and I've become an asset in several projects involving financial modeling, automation, sensitivity analysis, ad hoc, etc.

I'm not sure how normal the timeframe is, but my manager has mentioned a few times to me that he plans to start preparing me to take over a LOB after my 1 year mark. This seems awfully fast and I didn't think many people started getting into forecasting until they hit Sr Analyst. I could be wrong.

I do take it as a huge compliment and opportunity to get better, but at the same time I'm sure my employer sees a similar opportunity where they can use a low-level analyst to do Sr Analyst work. As mentioned, I've already kind of given a hard impression that I'm a bit of a workaholic.

So to narrow in on the point of this post. Is it normal to be forecasting and taking over a LOB after 1 year? Have I screwed myself by showing my "cards" (I've been told this)? How can I make the most of this situation overall?

Thanks!