Have you tried playing around with macro ratios for protein and fat, seeing if upping intake of one or the other helps?This is always hunger.
When I first began glargine I had not heard of fasting. But my legs started hurting and extreme hunger began. I blame the glargine because it goes away. If I stop using it.
I'm still hungry but it's not extreme and food resolves it.
Appreciate this is likely caused by medication so maybe that won't work for your situation, but on keto levels of carb intake I've had to adjust fat and protein levels a few times now to balance out hunger as various other factors change. I've also increased fibre intake too, which although not easy on keto, has helped.