The only way Harry can win now is to eliminate Jaz at the round table
A lot of things would have to happen to make this work.
Harry would have to really cotton on to the fact that Jaz is out for him - and I'm not sure who would tell him that. I think Jaz is too smart to reveal his hand to Mollie who would snitch.
He would then have to go Andrew and tell him that Jaz is out for him. Andrew knows Jaz has talked to him about Harry but he won't know if Jaz has been playing them both. It will plant a seed.
Harry then persuades Mollie - shouldn't be hard. And leaves it to Mollie to persuade Evie
Mollie and Jarry point the finger at Jaz at the table. Jaz calls out Harry. Harry lies to his face and says "I know you've talked to Andrew about me so how how come you've talked to me about Andrew" and makes Jaz look like a snake.
Andrew senses a tide against jaz so plumps to lose him.
Jaz goes
At the fire pit mollie won't turn on Harry and Andrew knows this so opts to share the money. Harry throws him under the bus