Best way to put on weight? ♡

Hey kittens. I've been trying to put on weight but it's been very hard. My hubby says I should eat more bread and meat while drinking milk, but I feel like that only works for him. I'm on the thin side and I have small wrists that makes me feel insecure. I feel like a child, Especially because I'm short on top of all of that. Any advice would be helpful thank you. ^-^