Good news indeed.
Just keep checking the BTw availability checker.
https://www.broadbandchecker.btwholesale.com/#/ADSLOnce the dist pole CBT has been fitted
should not be that long but obviously site locations vary.
In my case, once the CBT had been installed and terminated in the local footway chamber it was only a few weeks before an order could be placed.
You are probably lucky being aerial fed as the installation is usually much easier and faster than UG distribution especially in older properties where the existing POTS copper is very likely to be DIG without ducting, although, even with a ducted installation the chances of running fibre directly to the existing master socket is usually very slim, the local FTTP installations I have observed to date have either ran fibre directly from the footway chambers or adjacent toby box or broke into the existing copper duct near the dwellings and ran fibre externally from there to a new wall entry point.
One word of caution with aerial distribution FTTP installation.
Ensure the ONT is fitted at a point which suits you with respect to Wi-Fi coverage as OR, or their sub-contractors, will site the router beside the ONT and from my experience won't relocate the ONT without additional cost to you.
I refer to my recent experience here with my sisters OH dist FTTP installation:
https://forum.kitz.co.uk/index.php/topic,26339.0.html