About three days. I get headaches, and shakey, and at some point in the first twenty four hours the hunger pangs vanish. So if I focused through something without eatung I might only realize due to headache and the empty vibrating feel.
It happens less as I get older as I understand body signals better and eat before the point when the hunger pangs fade.
I don’t know if this helps, but someone who loves the adult-you will absolutely look at your baby photos through the same filter as they look at you now. They’ll see those photos as a little peek into the past of someone they already like. So you could genuinely be ugly as hell as a kid–but if they like you now, that’s not gonna matter to them, you’ll be cute.
This doesn’t have such a large age-gap, but someone I knew had a crush on me looked at my employee photo (that I fucking HATED) and decided they liked my “little smirk”. Why did they love the photo I hated? Because they had an emotional connection to me (on their side at least) anyhow.