>>76412177 (OP)It will take a couple of months.
Use light weights but good form and make each rep sloooooow. The goal is to flood the muscle with as much blood as possible when you get micro tears so the repair process starts with an engorged muscle to maximize growth.
You don't need a lot of weight nor a lot of sets nor a lot of reps. 3 sets of 8 reps at low weight with good form with very slow movement from beginning to end will generate good results.