Hi Nairji,
there are more than 50 regional offices and EB transfers are not so common so tracker for a specific office might not be much help(except the busy ones)
I am also transferred to Portland . May be we can give moral support to each other.
I have done my own research from archive cases and from friends and got some some responses from here that it takes 2-3 months to get a interview.
I am also doing some research for other centers just to get a pattern .
The regional centers interview wait time can be catagorised into three types
bad - New York , Chicago etc (more than one year)
not so bad- Milwuakee, Baltimore (5-6 months) may be st. louis
ok - 2-3 months (may be Portland, Cincinnati)
let see how it goes
You may visit st, louis office in person. it might help
best of luck
