The teenager, 18, has been set up in a three-bedroomed house across the road from the family home in Surrey as he begins to live independently.
He’s set to move into a residential college later this year, and Katie has revealed he’s now living apart from her in a bid to help make the transition easier on him.
However, Harvey is not alone – he has a carer looking after him and the house has been rigged up with CCTV cameras to make sure Katie knows if there’s a problem.
In a video interview with Us Weekly, Katie explained she wants to take Harvey’s transition to independent living as slowly as possible.
She said: “I’ve got him his own little house at the minute. It’s opposite where we live. It’s got all cameras in it.
“Either I’m here or there’s a carer… who’s known him for seven years from school.
“He’s got his own kitchen. It’s a three-bedroom house, so that’s the start of his independent living. So I’m doing it slowly for him.
“Because otherwise I don’t want him to think I’ve just sent him away. It’s transitional.”
Katie went on to reveal Harvey, who turns 19 in May, knows he’s going to college and can’t wait to see his new bedroom.
She added: “So he knows now he’s 19 he’s going to a college and I’ve shown him some of the colleges.
“He’s more excited about what his room’s going to look like and if it’s got a kitchen. ‘Cos he probably thinks I’m going to fill it up with lots of stuff which I won’t be.
“I’m doing it that way for him because I want him to be happy, ‘cos if he’s not happy then I’m not happy.”
Katie has applied for Harvey to live at National Star long-term living accommodation in Cheltenham, which provides education for people aged 16-25 with “complex disabilities”.
The former glamour girl has spent months scouting residential colleges for the teenager and has picked one she hopes is the right choice for him.
At the centre, Harvey will be looked after by trained professionals will help him live a more independent life.
Katie also hopes living at the centre will protect her son, who suffers from autism and can get spooked by loud noises.
As well as autism, Harvey also has signs of Prader-Willi Syndrome and is partially blind.
He previously started at a residential school for five days a week, returning home at weekends, but returned to the family home full-time in March due to the coronavirus pandemic.
Harvey is considered at extremely high risk from the deadly bug.