Correct the next sentences, please.

（Japanese）彼は4度しかレッスンを受けていないが、確実に進歩が見て取れる。

Which is better among the next sentences?

1. We can confirm his progress though he had only four lessons.
2. We can confirm his progress though he has taken only four lessons.

The incorrect part of the sentence is the first part - "We can confirm his progress .."

These two sentences might be better to express your meaning.

Although he has only had four lessons, he has made a lot of progress.

Although he has only taken four lessons, he has made a lot of progress.