So, should I keep it all business and see what develops? The hardest part for me right now is moving forward with a status of "limbo".
That is the big question, isn't it!
I'd recommend starting with acceptance that this sort of pulling away is something that your BF will do.
He isn't likely to change... .or certainly not quickly. Some senior members here have stayed in long, somewhat ambiguous r/s, knowing that there will be times of pulling away, and have found that it is worth it to them.
Pretending he is suddenly "different" now isn't a good bet.
I gotta add that ending the silent treatment as if nothing had changed is the sort of thing I've experienced many times.
I wish you peace and clarity.