You're on 250mg/week cruise right now. Its unlikely you'll lose any LBM because of the prime. Unless your calories are way too low overall. Just get used to the hunger, replace that hunger with a pint of water, it helps.
Evenings make up some sugar free jelly, theres no macros except 14g protein, and you get about 4 pints of it. Really fills that hole before bedtime, and its satisfyingly wibbly-wobbly!!
