How long did it take you to get into optimal ketosis?

My food was meat (generally pork or beef) with some veg, Kale, leeks, cauli or spinach with eggs and bacon in various combinations.

I did not actually count the carbs but it was not much. No milk in tea/coffee. Nothing sugar at all.

When it came it left me with a nasty taste for a day or 2 that I could not shift even with mouthwash, also a headache too, headache is too polite a word, it was a post bender headbanger of a headache. More water and salt helped but eventually those electrolyte sachets you can get from the chemist. I added that to my drinks bottle I take to work and that sorted me.

Even as a pre diabetic I had some very low after exercise numbers, 4.0 was about as low as it got but there were a few occasions if I walked too far to fast I felt really wiped out and unwell. With meter error I could have been well under 4 then I suppose.

Not a T1 view but hope it helps.