I'm not sure using insulin would stop you from producing it in the long term, but perhaps it could make you insulin resistant.
I have used insulin numerous times. Longest period I have used insulin would have been
3 months.
With regards to usage in BB, I believe it is the most dangerous of all. Diuretics would be up there and so would t3 and clen.
My recommendation is to stay away from it.
My worst case of hypoglycemia occured about 2 years ago. I was dieting, carb cycling with a really low amount of carbs, very close to ketosis. Well, it was my refeed day. And refeed I did. Consumed aprox 8k cals, and a good portion of carbs. I was fucking stuffed from eating all day.
About an hour before supper I took either 3 or 4 iu of insulin. Made a shake with carbs just to makr sure I wasn't going to go hypo. On my way out for supper I started to go hypo. Drank my drink and continued to drive.
All of a sudden my blood sugar went down cobsiderably. I had to pull over for an emergency stop at a gas station. By the time stepped through the doors my heart rate was maxed out, easily 200+ bpm. My vision was foggy, started to sweat, and couldn't even think straight.
At this point my only thought was survival. Should I get the cashier to call 911? Not enough time. The only way I knew to survive was find some sugar. I made my way to the fridge, grabbed a bottle of Powerade, read the label and chugged. 60g of carbs later, or was it 90, I was still fucked. I grabbed another and slammed that back. Could only get half of it down as I felt like I was gonna puked, because I was so fucking full. And still felt I was gonna die.
It took me about 3 minutes or so to regain the level of conciousness that was necessary to pay. Must have looked like a fucking junky doing so: chugging Powerade, pale as fuck, sweaty, shaking, and just straight tripping.
I survived though. Couldn't eat barely anything for the rest of the night. Had to sip on Coca-Cola for an hour or so afterward. Felt like ass for the rest of the night and the next day. The hypoglycemia felt like it fucked my brain and heart up good.
So ya, go ahead and take insulin if you want.