After 7 month fue can I still wait for the growth of transplanted hair?

It can take 6 to 12 months after surgery to see results.  If you are concerned it is best to contact your doctor

7 months past FUE you still have a significant amount of time left before reaching the final growth state near 12 months. It is very possible/likely that in these coming months you'll see some improvements with the transplant growth.

The final results of a hair transplant procedure will become more evident after 12 months. 7 months is far too early to judge the final results. Your hair will continue to grow and thicken during this period. Furthermore, it is recommended that you take Finasteride for maximum effectiveness. A positive regrowth rate along with a natural appearance is the most sought after result when evaluating the success of a hair transplant.