Is 30 minute lessons long enough

Hi I was just wondering if you think 30 minute lessons are long enough as lessons are usually an hour. I have found when lessons are an hour your voice gets tired so you have to rest so I feel like getting half hour lessons are optimal and i'd rather get shorter lessons more frequently because consistency is key. Thoughts?

30 minutes is great, in my opinion (especially with online lessons). And I agree, consistency is more important than lesson length. 

Thankssssss

Sure thing!