Blood sugar spiking with on keto

I'm a type 2 diabetic. The first year was easy. I lowered my a1c by 3.5points in the first 6 months. Then I got over confident, and it started to come back up. So I really been buckling down and trying to stick to as little carbs as possible, going for walks, and making sure I take my medication on time.

I'm taking 32units of lantis twice a day currently along with some metformin. I can't keep a consistent blood sugar level!

The last week I have started the keeto diet. I have had zero carbs, while i feel fine my blood sugar is spiking dangerously high while having zero carbs. My blood sugar was 300 this morning! I had no carbs for a week now. I took my meds, drank tons of water, went for a long walk even though I shouldn't be out during this virus. Got it back down as low as 175 before dinner.

All I had was two poached eggs. I am now checking it before bed and it's back up 235. I have been drinking water all day none stop. I have drank over 2 gallons of water in the last two days trying to keep my sugar even. Nothing I do helps.

All I was able to do is get a hold of my doctors MA which she told me my doctor was out till for two days. She was hoping the person filling in tomorrow might be able to get back to me.

Has anyone here had this problem? Does anyone know what I'm doing wrong? Thanks!