I know you must love your brother and all but he's holding you back in the gym. Don't do that routine anymore. You don't need to bench 4 times a week. Look up starting strength. It is a great program and it will teach you about progressive over load and periodization. Also if you work out. 5-6 times a week for 2 hours that 10-12 hours a week. Go to the gym. Warm up. Get your shit fvcking done. Dont wait for people to be done with equipment. Ask them if you can set in. Someone's dilly dallying with the 25lb dumbbells? Grab the 30s and do them to your fullest! Make every rep count, don't swing the weights during curls.don't focus on how many reps focus on how much those reps count. Hard, intense, muscle tearing reps. Feel it in the muscle! If you do your workout in 45-60min you're saving 5-6 hours a week. Thats enough hours to get a part time job for every sat. At minimum wage ($8,$9,$10) that's like $160+ a month

Eat more. Plain and simple. Go bag a big bag of brown rice. Cook that shit up eat it!