Please give me tips for private training

As a beginner, should I use privates to learn new techniques, or perfect existing ones?

I’m only starting to be confident in sparring with one combo: 1-2 outside low kick, or inside low kick, or faint any of those techniques and go for the other.

Yet in private training coach is wants to teach me his favorite combo, which I couldn’t hit in sparring.

What should I do for limited private program like this?