Thomas Markle Jr has pleaded for the Queen to step in and heal the rift so that Doria Ragland doesn’t “fall of the map”.
The Duchess of Sussex, who is 38 next Sunday, has not seen dad Thomas since it emerged he staged photos ahead of the royal wedding.
Thomas Jr, 53, who lives in the US, said: “She (Doria) gets a day here, a day there… that’s about it.
“I think that’s probably the next relationship that’s going to fall off the map.”
“I think the Queen should step in and tell Meghan to make amends with her father and family”
He is worried that Meghan’s family may not get to see Archie who was born last May.
Thomas Jr continued: “I think the Queen should step in and tell Meghan to make amends with her father and family.
“Charles should step in and say ‘something’s not right’.
“They should force her into this, or it’s just going to continue to cause problems in her life.”
Meghan reportedly does not speak to her father.
Her dad didn’t walk her down the aisle after missing the wedding following claims he had suffered a heart attack.
He later published a letter from the duchess in which she wrote: “Your actions have broken my heart into a million pieces.”
Thomas Jr appealed to Megan: “Now you’re a mother I hope you’re grown up and mature enough to figure out family is very important.
“If something critical happens to our father would Meghan show up. I honestly don’t think she would.
“God forbid she’s not that heartless. I don’t think anybody could live with that for her entire life.”
He was also critical of the way that she was using public money to fund the £2.4million renovations at Frogmore Cottage, where she and Harry live on the Windsor estate.
Thomas Jr said: “I could see this would be pretty disappointing for some of the British public, especially when there’s a lot of people struggling just to get by.
“Personally I feel I don’t know this Meghan any more. My father doesn’t know this Meghan any more.
“You (Meghan) do have a family in the United States and we all love and care about you.
“Some day I hope you’re smart enough and mature enough to open up and let your family into your life and Archie’s life.
“Most of all I hope you call your father and let him be at least a part of yours and Archie’s life. You owe him that.”
Kensington Palace have been contacted for comment.