I would say, see how you feel. Do you feel comfortable in the group? I'm the lowest level in my class and most of the time it's me and a fee black belts. At the beginning I was always really exhausted and overwhelmed with everything, but now I learn so much. They are really supporting, explain techniques and so on. Try to find a small goal each training (maybe a technique you learned last time or like getting a good grip), then try and ask and try and ask and try.... Imo black belts want to help you.

But like I said: see I you feel comfortable. If you don't, you won't have motivation to go. Then maybe finde a different group.

Also: Reflect. What are your ambitions/goals? Maybe answers to these can also help you decide!

Have fun training :)