The Duchess of Sussex was last seen alongside Prince Harry at the Commonwealth Day celebrations at Westminster Abbey on March 11

With just weeks to go until she welcomes her first child, Meghan Markle is keeping up a steady work pace — only now it’s behind closed doors.

The Duchess of Sussex has no new public duties on her calendar, so royal watchers may have to wait until she has her baby in April to see her again. But she is continuing to work via private engagements, so she has not officially left on her maternity leave yet, royal sources say.

“There are plenty of private meetings taking place. If she is to do something public it would be announced, but there are none that are scheduled,” a source says.

Commonwealth Day, London, UK - 11 Mar 2019
Meghan Markle
| Credit: Tim Rooke/REX/Shutterstock

In fact, Meghan had a private meeting at Kensington Palace on Wednesday with two executives from one of her patronages, the National Theatre. The royal mom-to-be will be continuing those private engagements and other behind-the-scenes engagements with her staff and others working with the causes she is focusing on in her royal life.

Commonwealth Day service at Westminster Abbey, London, UK - 11 Mar 2019
Meghan Markle and Prince Harry
| Credit: Tim Rooke/REX/Shutterstock

Meghan and Prince Harry, 34, are on track to move into their new home in Windsor, Frogmore Cottage, by the time the baby arrives, PEOPLE understands.

Meghan was last seen alongside Harry and her in-laws — including Kate Middleton, Prince William and Prince Charles — at the Commonwealth Day celebrations at Westminster Abbey on Monday.