Is it okay to do the same workout routine every alternate day like biceps and triceps on one day, chest, back, and shoulders on the next, then biceps again?
It is ok but you appear to be placing too much focus on small muscles. I don't your muscles are small, I wouldn't have any way of knowing that but the bicep is almost certainly one of the most overworked muscles by novice, male trainees. Think day 1 squats as your core activity, bench/upper day 2, day 3 deadlift, day 4 upper again, then squats again on day 5. In truth, you can do biceps towards the end of ebvery workout, of you like (say 3–4 times/week) . Just focus on a core exercise each day then add on supporting exercises.