But he says the system itself is falling short.
“The options for blood cancer are just so limited… there’s almost no recognition of it.”
Specialists have told him CAR T-cell therapy offers his best chance of survival - however, it is not publicly available here.
Instead, Oliver and his wife Nicky are preparing to travel to China, where the treatment could cost anywhere between $125,000NZD and more than $400,000NZD.
“There’s a lot of Kiwis in the same position… spending a fortune to go overseas and get treatment because it’s just not available here,” he said.
His daughter, Georgia, said the reality of needing to leave the country for treatment has been difficult to process.
“It’s horrible and unfair that we have to go through all of this to receive treatment that is standard of care everywhere else in the world.”
She said the treatment represents more than just medical care - it’s time.
“It [CAR T-cell therapy] will allow us more special time together and more memories to be made as a family,” she said.
Dr Alicia Didsbury, an Auckland researcher leading efforts to bring CAR T-cell therapy to New Zealand, says this situation is becoming increasingly common.
“CAR T-cell therapies have become standard of care… but it is not available in New Zealand.”
She said patients are often forced to raise hundreds of thousands of dollars to access treatment overseas - something many simply cannot do.
“It’s terrible… we have families contacting us every week saying they’ve reached the end of their treatment options.”
Didsbury’s project aims to make these therapies more accessible and affordable in New Zealand but says significant funding and system changes are needed.
“There absolutely needs to be a pathway for funding these machines… the fact that we can’t even offer them is terrible.”