low blood sugar

A reading of 3.3 mmol/L is far too low, and most certainly 2 hours after eating breakfast. You did the right thing in taking the sugary tea to restore your B/G levels back within the safe range.
Obviously we cannot advise as to what caused this, it would seem to me to be the combination of the LCHF diet together with a high dosage of the Metformin, though Metformin is generally considered not to lower B/G levels that low.
It would be worth seeing if the same thing happens or causes a too low level and that this isn't a one off, in which case I would advise you to contact your DR or DN and ask them to readjust your prescribed medications

what was your pre breakfast reading?
normal BG starts at 3.5
it could be a dip after a spike as the bg stabilises, I would do a pre meal 1, 2 and 3 hr reading to see what's going on.
talk to dr, you may be ready to start reducing metformin, if you are getting a pattern of lows

Lexa_x said:

Hello,

Did a test 2 hours after breakfast and my reading was 3.3.. had some suagry tea and got it up to 4.5.

Not sure whether to worry or not?

Im on 2000mg of metformin and the lchf diet.. should I enquire about less medication? Eat more carbs?

Tia x

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Most importantly, how did you feel at that score?

Bearing in mind your meter (like everyone else's) has a +/-15% tolerance, you would have been a bit higher in reality. Did you retest?
I am often in the 3s and rarely feel anything unless I'm under around 3.2, then I'm usually just hungry.

You are not on any medication (according to your information) that would lead to serious hypos, so play it by ear. Next time, I'd just have tea with milk, and leave the sugar out. The milk alone with lift you a little.

If you felt off, then again, just the tea as a first port of call, then if after 15-20 minutes you feel no better then have something else - maybe more tea, but this time consider a small amount of sugar.

Honestly, don't worry about small numbers. Many non-diabetics run in the 3s and 4s all the time, and let's face it, we are trying to replicate non-diabetic blood scores, are we not? If you were taking heavier meds, or were T1, the approach would be different.