When to test to level up?

Hello!

Just wanted some advice from other Club Pilates community members!

I have suffered a knee injury where I’ve lost a bit of cartilage in my knee (chondromalacia patellae) which is why I join Club Pilates. My ortho doc recommended doing Pilates because of the reformer and the type of exercises would be better for my knee compared to what I was doing before. Before this, I did a lot of exercise, like hiking, barre, etc..

I have taken a total of 13 classes. While I don’t feel like I know every possible variation out there, I feel like I am a quick learner who grasps what is needed of me quickly compared to how level one pacing can go. My question is: Is 13 classes too early to test for 1.5? Would a knee injury like mine prevent me from doing 1.5?

I know the common answer is to ask an instructor, but I haven’t really developed a super close relationship with any instructor yet and have a bit of social anxiety so I thought I would ask the Reddit community first so I could have some information before going into that!

Thank you!!