I’m recent AG drinker - enjoying it a lot (the product, the customer service not so much).
I break my fast usually around 10AM and have AG1 around an hour earlier. The AG suggest you drink it before your first meal. So far it’s been great. I’ve heard on Huberman Lab podcast that he does similar thing and he tested drinking AG with continuous glucose monitor - it doesn’t spike his sugar at all (not breaking fast).
BTW does anyone know good alternative to AG1? Love the product but their delivery (2 packages lost/damaged) partners are too much hassle.