Yes, intermittent fasting or just I.F. can be used effectively by Type 1 and Type 2 Diabetics

You can google Dr. Fung - he is a Canadian Nephrologist who treated mostly Diabetic patients and developed a program - I'm not saying follow it but it is worth a serious read of some of his material if you are going to consider I.F.

But under any circumstance work this out with your Doctor - this isn't something you should try at home with internet advice and particularly if you have other health conditions it could be dangerous - so medical advise is a must

There are a number of different (styles) with a common one being doing all your eating in an 8 hour period (call 16:8) and all other types are simply modifying that like 20:4 eat only in a 4 hour period, day on/day off etc

Working with a doctor you can figure your goals (weight loss, blood pressure, blood sugar) and decide which (type) would be best for you and then the help of a dietitian (you don't want to cut out key nutrients) will get a program that will work for you IF You can stick to it

Nothing different than any diet - you must be able to sustain it for it to have value - that is why "I personally" would never attempt KETO - no way I can restrict that much - my choice....