EGKB, you have been asked by your instructor to use power for glide and pitch for speed and have been advised by the majority of posts on here to do likewise (while explaining that the two are linked, but that immediately and instinctively changing pitch when speed gets low can save your life) Any basic flying training book you read will say the same.
You are going to have to convince the instructor that you are safe to fly before he sends you off on your 1st solo. Doing things "your" way rather than the way taught is likely not going to inspire him with confidence.
Good luck with the rest of your training anyway.