Hi Josie Welcome to the forum
I like you are Type 1 and low carb...a lot lower than you for a lot of the time, infact I'm just getting back into Ketosis after letting it slide over Christmas..and I feel SOOOO much better for it.
I find from time to time I lose too much weight,so though my control is so much better on this diet and I feel great. I do get a bit thin sometimes.
Can you give us some examples of a typical days eating?
I find that I have had to increase the amount of food I eat, I eat a lot more calories now...which for a little piggy like me was not a bad thing. You may need to introduce more fat into your diet. Don't be afraid of fat, good fats ,olive oil, Avocado oil..butter ,cream, and I eat coconut oil off the spoon if my weight drops too much...I'm finding I won't need this for a while after my Christmas fall from grace :lol:
Avocados are good for weight gain, also nuts...I make Pancakes for breakfast with Ground almonds,cream and eggs, with a bit of corn flour to hold them together...have these with some whipped cream and berries.
Good meat with lots of fruit and veg is the staple of my diet on the whole...the whole rainbow of colors is what I aim for as much as possible.
Hope some of this may help, take a look in the recipe section ,get baking some of those fab cakes and I'm sure you will start to pick up a bit of weight. My Cholesterol is the best its ever been! And like you I have found it gives me the most stable control.
Good luck