Lchf diet ? Ok thanks I'll look that up now and find out what it is
LCHF stands for Low Carb High Fat, which is actually broadly similar to Atkins. There are many ways to manage your diet, now you've joined the diabetes club, so please do do plenty or reading.
As you intend testing your bloods as you go, you will get great feedback on how you're doing, which I, personally, consider to be important.
Your profile doesn't give us any clues whether you take any medication or what levels you were diagnosed at, but that might help folks make relevant suggestions as you move forward.
If low carb is appealing to you, this site does a Low Carb Programme, structured to take place over a 10 week period. I haven't done it myself, but ti gets good feedback, from folks who have done well on it.
Take it steady; do plenty of reading before you jump headlong into wholesale changes.