I don't suppose the Sandler sales system could be worth a try?
If you don't have a sales system, then you are likely following the buyers' system. And the prospect is in control of the buyers' system.
The seven step Sandler system puts you in control, while letting your prospect feel in control. The Sandler seven steps include Bonding & Rapport, Up Front Contract, Pain, Budget, Decision, Fulfillment, and Post-sell.