What are the lead times for installation of your home charging point? Fairly quick or very much dependent on your postcode? Not really an issue if you’re ordering something that takes three months to turn up but my local MG dealer reckons 2-4 weeks for an MG4 and no charging point means pointless car.
Dependant on where you live and how bust the installers are.
You can try ringing ProEV or whever it is thats organising your install and Motability, explaining its pointless having a car with no date to have a charger fitted!