I would say that 7 months is quite some time, and for there to be no movement at all, towards reconciliation, in that time-frame, says much. If I may say so it sounds as if perhaps both of you are a bit frightened by the implications of the logical next step.

Do as Mike_J suggests: get all the practical items squared-away. It doesn't matter how "amicable" the split will be, there will still be a bit of a mess made of the financial and other such matters. It doesn't make sense to leave those issues to chance.

Since it's obvious that you, yourself, are ready to move past the separation phase and either reconcile or make it permanent, simply present that sentiment to your wife, unequivocally. Put a time-frame on it: please make a decision by such-and-such date... Easier said than done, I know, but then again there is no "easy" way to do some things.