"She has huge amounts of energy, is extremely determined and wants to be a hands-on as possible with her charities."
They continued: "She's pencilled in three months but she'll most likely return to public life in six weeks - on the Queens officially birthday, Trooping the Colour, in June."
The news comes just days after it was revealed Harry and Meghan are looking for a nanny.
"Despite all the pressures and constraints that she has, Meghan is just naturally a caregiver," a source told Entertainment Tonight.
"She cooks for Harry because she's great and she loves to do it. She's unbelievable. She can't wait to be a mother."
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