How does your horse respond when you’re not getting in perfectly? Do you see a general, overall, upward progress in your lessons? And I mean over months - not between one lesson to the next.
If your horse is getting mad, bucking, pinning ears or acting sour with you - then I would step back and focus on pole work for a month, let the pro jump him, and revisit. If your o/f is going worse than it was months ago, I would say the same.
But if your horse pop chips and lands and comes back to it kindly, and if you’re seeing progress - however slowly - I personally don’t think you jumping your horse once a week at 2’3’’ and not being perfect is going to ruin him.
That said - if you are getting harder and harder on yourself, and more discouraged, and need a mental break that is totally valid too!
For me personally, mine doesn’t care. He doesn’t get pro rides and we jump once a week a max of 2’6’’. We can completely trip through a fence and he will come back around kindly and calmly. I know he would be progressing faster and better with a pro, but as long as he is happily tolerating my mistakes and I can keep my frustrations with my own mistakes in check, we’ll keep going as is. And, when I step back and look at video from even a month ago, I do see things that are already so much better.