However, there is one thing like practicing too much, and you should always stop practicing if you feel tension in your vocal cords. Taking breaks throughout the day will allow you to develop the vocal endurance needed to practice more each day. If you want to make changes to your voice in a few months, practice as often as possible. Taking regular classes is a must, try to have weekly lessons if you are serious about developing your voice and vocal balance.
However, there are ways to get great results outside of classes. Yes, you can train your voice through regular practice. Practicing every day will improve your vocal range, vocal strength and vocal prowess. For example, if you have never sung before and have just started vocal classes, doing 3 hours of practice will not benefit you: the muscles in your voice are not strong enough to hold up to 3 hours of exercise.
Of course, all bodies are different, but for me this is like suggesting that all singers avoid spicy foods because some people suffer from reflux from spices that could affect their vocal cords. Not only are their voices fatigued faster, but the vocal concepts are newer and therefore more difficult to understand. In my first vocal class (masterclass), my first vocal coach informed me that he spoke a fifth too loud lol. And of course, practicing singing will help you maintain your vocal health, but you have to warm up your vocal cords and not overdo it, anything more than an hour of singing at a time is probably too much for your voice.
In the same way, an athlete can stretch a muscle by exercising excessively, singing too much can strain the vocal cords. In addition to being a singing teacher, Tom is one of the 10 founding members of the Institute for Vocal Advancement and serves as the organization's chief financial officer and marketing director. The breathing exercise will help you sing and build your lung capacity, and you can do it anywhere, anytime. Regular and varied practice will develop your technique, develop your vocal cords and help you train your voice.
The smaller and more frequent bits of GOAL-ORIENTED FOCUSED practice are much better than singing some songs and exercises with no idea what habits are supposed to change. Singing when you are sick can damage the vocal cords and it is possible to practice too much and damage the voice. You should also try to develop personal vocal training (you can talk to your singing teacher or other singers about what is best for your type of singing).