And audiences are likely to see the Liam Neeson-produced movie in cinemas in the first half of next year, sources told the Irish Mail on Sunday. "The Lost Children of Tuam" - made in association with the BBC and Oscar-winning Irish company Element Pictures - began shooting in mid-September and is now in post-production.
The film will be released as the Government-appointed excavation of the grounds at the former home in Tuam continues.
A source close to the project said the filming, much of which had taken place in the Co. Galway town, had "gone better than expected" and the production team, led by director Frank Berry, were "pleased with everything they'd got".
They told the MoS: "The film is being edited now and it could be released in the first part of next year."
The BBC has confirmed that the film has now entered the post-production stage.
"The Lost Children of Tuam" will tell the story of how local historian Catherine Corless's research led to the discovery of the mass grave at the mother and baby home, as first revealed in the MoS in May 2014.
The film is based on a feature-length story published three years later in the New York Times, which also went under the headline "The Lost Children of Tuam".

Historian Cartherine Coreless and her husband, Aidan, at the vigil in Tuam, Galway, in 2018.
BAFTA award-winning actress Monica Dolan, star of "Sherwood" and "Mr Bates vs The Post Office", plays Ms Corless. Other cast members include Andrew Bennett ("God's Creatures", "The Quiet Girl") and Ian McElhinney ("Game of Thrones", "Derry Girls").
Ms Corless told the MoS this summer the film is not about her but about the infants and babies who "suffered horrifically at Tuam. They are the ones at the centre of it".
Speaking in September, Hollywood star Neeson - who bought the rights to the film in 2017 - said he was: "Honoured and proud that after eight years of preparation we are to start production on this profound story of one woman's relentless pursuit and dedication in uncovering the horrific truth of the events in Tuam.
"[Events] that shocked our nation to its core and are still reverberating in every aspect of our society. The truth will out."

Site excavations finally began in Tuam.
Mr Berry, who is originally from north Dublin, is well known for his work exploring social issues in contemporary Ireland.
His films include "Ballymun Lullaby" (2011), "I Used to Live Here" (2014), "Michael Inside" (2017), and "Aisha" (2022).
Last week, the team overseeing the dig at the former Tuam home confirmed they uncovered the remains of five children on the site of the home.
However, it is still unclear whether the children were residents of the Bon Secours-run mother and baby home, which operated from 1926 to 1961, or the earlier 19th-century workhouse, which previously stood on the site.

The scene of the mass graves where 796 bodies are believed to be buried.
Further analysis will now take place on the remains.
The bones were not found at the location of the disused septic tank, which a previous partial excavation in 2016 confirmed did hold the remains of infants.
These are believed to be children from the Tuam home who were buried without ceremony in the sewage pit.
Archaeologists on the dig, which began in July and is expected to take two years, have also uncovered babies' feeding bottles in the soil.
* This article was originally published on Evoke.ie
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