If you're intention is to gain weight (not just muscle) you need to eat more than your BMR, no two ways around that. A decent surplus (say 200-300 calories above BMR) and a good program is key.
Yeah I need to figure this out. My appetite is pretty small and I’m very convinced I have some undiagnosed IBD (due to some rather specific symptoms). It doesn’t take much to make me feel close to vomiting if I eat too much.
Does feeling sick after consuming a lot apply to shakes as well? Only thing to keep an eye on with shakes is your appetite would be satisfied but you’d need to still take in your meals