Hello Spy .
When low carbing, i initially lost some weight, but got to the point I would be much too thin if I lost any more. I've managed to stabilise things now and have run in a range of +\-2kg for a number of years. To be fair, it's usually less than 2kg either way, but that's what I allow myself.
I don't know what rate you have been losing weight, or where you,are on the BMI range. Whilst BMI is a very blunt tool, it's a rough gauge to help.
What I did, initially was,just up my portions of everything I ate, a bit. Don't ask me to define a bit, because it was by eye on my plate. For me, that wasn't quite enough, so I added more fat, in a measured way - measured by Baby Bell cheese and sherry glass sized portions of nuts.
Now, now, be kind to me, but they were just easy measures. To be fair, you can use any measure, but best if it's consistent. That allows you to gauge reliably, whether the approach is working.
Once my weight stabilised, I then sort of knew what I'd got to add in, and worked on variations to get that sort of calorie and nutrient mix.
I'm afraid it does involve a fair amount of experimenting, and measuring of your food intake, weight and blood glucose. That allows you to look back and decide on any next steps.