another board size question

I've been surfing for about 9 months now on a 7'2, 22' wide board. I usually make it out a couple of times a week but I am starting to feel my board is a bit big, especially in larger surf as I can't duck dive and usually get pounded.
As a surfing I am still a beginner but possible progressing a bit faster than usually since I have been a beach lifeguard for a number of years and I am use to paddle boarding in surf. I can pop-up onto my feet, get a line and steer a bit on waves. I still need to get onto my feet a big faster in steeper waves as I still get trashed sometimes. I feel a smaller board would enable me to steer a bit more sharply and might generally be a bit more comfortable.
I am about 5'9 (or 176cm) and weight about 145 pounds (or 66 kilos). Should I stick with the board I have for a bit longer or is it time to move on to something smaller and if so what size would be good for me? Any advice would be appreciated.
As a surfing I am still a beginner but possible progressing a bit faster than usually since I have been a beach lifeguard for a number of years and I am use to paddle boarding in surf. I can pop-up onto my feet, get a line and steer a bit on waves. I still need to get onto my feet a big faster in steeper waves as I still get trashed sometimes. I feel a smaller board would enable me to steer a bit more sharply and might generally be a bit more comfortable.
I am about 5'9 (or 176cm) and weight about 145 pounds (or 66 kilos). Should I stick with the board I have for a bit longer or is it time to move on to something smaller and if so what size would be good for me? Any advice would be appreciated.