Having a couple of classes a week depending on your needs as a singer is good, but if you think it's not necessary, then we recommend you return to once a week. Some people want to do more right from the start and others want to do less than that. For most people, I recommend consistent weekly classes as optimal if possible for them. In my experience, people who plan to do two or more lessons a week find that they don't actually progress much faster.
It takes time for the body to develop new habits, and singing is a rather sophisticated process for the body, since many things have to align. Try to take a class at least once a week. If you can have more, you'll progress faster. If you can't, remember that practicing at home is just as important as the lessons themselves.
Everyone sings at different levels with their own unique style and technique, so only you can really say how often you'll need to take singing lessons to improve at the pace you need to achieve your goals. Usually, these people end up dropping out of classes out of frustration, they don't find time to practice at home, etc. So while it's important to practice every day, be careful not to sing for more than 2 hours a day. Everyone can learn to sing better, and a voice teacher can help you learn how to use your voice to the best of their ability.
If you have ever considered taking singing lessons, or maybe you have already started some, you would have already wondered, how often should you take classes. In my experience, it works, but only if you're really committed to taking the time to practice at home. In my opinion, it is better to adjust your budget in terms of the frequency of classes, or when it comes to choosing individual or group classes, rather than choosing the cheapest teacher you can find. While I think it's really valuable to be willing to spend more time and money on singing instruction, in my experience, it's better to follow a weekly lesson and instead focus on practicing regularly at home.
Sometimes I hear a new or potential student tell me that, as a beginner, they would like to come to a lesson every few weeks, and then, once they're more advanced, they move it to weekly classes. What this means is that your voice teacher is there to correct and guide you, so you will develop a good singing technique that comes naturally. However, in general, if you can't do 2 or 3 singing lessons a week, you may not improve your voice, even if you practice constantly at home. If you intend to take regular singing lessons, try to find a coach you enjoy learning from and who you can get along with.
So if you want to become a singer, it's important that you develop some new habits in the way you use your body and voice. If the goal is to access your full potential as singers with an emphasis on an easy, natural sounding tone, you're in the right direction.