Mini mal to short board??

Heya!
I'm new here... and pretty new to surfing in general!
I've been surfing for about 5 months now, reasonably regularly (at least once a week usually about 3 times) on a 7'2ft mini mal - 22",3" so quite a big volume - but has been an awesome board to learn/have fun on and I am now reasonably confidently surfing the green waves and can 'trim' left and right
The reason I am asking, is the past two days I went out with my friends who were on shortboards and they were able to easily get past the whitewater whereas I struggled quite a bit. Granted they are a lot more experienced than me and better paddlers (and I know I need to improve on this) however I did feel that my board made it even more difficult for me as when I tried to duckdive I couldn't manage to get the board deep enough that I wasn't taken back with the wave.
I was wondering whether you thought a shortboard (or one with a bit less volume) might be a good option to look into or whether you think I should be able to duck dive my current board and it is more my lack of strength/experience?
I'm female, 5'2, and about 125lb. I'm reasonably cardiovascularly fit (do a lot of road/mountain biking) however perhaps a bit weaker in the arms!
I'm not looking to sell the 7.2ft as I think it's an awesome board to take out on smaller days/when the white water is a bit easier - however if I were to look into a shorter board, what do you think is the next step for me?
Sorry for the very long speal but thank you in advance for your help!!
I'm new here... and pretty new to surfing in general!
I've been surfing for about 5 months now, reasonably regularly (at least once a week usually about 3 times) on a 7'2ft mini mal - 22",3" so quite a big volume - but has been an awesome board to learn/have fun on and I am now reasonably confidently surfing the green waves and can 'trim' left and right

The reason I am asking, is the past two days I went out with my friends who were on shortboards and they were able to easily get past the whitewater whereas I struggled quite a bit. Granted they are a lot more experienced than me and better paddlers (and I know I need to improve on this) however I did feel that my board made it even more difficult for me as when I tried to duckdive I couldn't manage to get the board deep enough that I wasn't taken back with the wave.
I was wondering whether you thought a shortboard (or one with a bit less volume) might be a good option to look into or whether you think I should be able to duck dive my current board and it is more my lack of strength/experience?
I'm female, 5'2, and about 125lb. I'm reasonably cardiovascularly fit (do a lot of road/mountain biking) however perhaps a bit weaker in the arms!
I'm not looking to sell the 7.2ft as I think it's an awesome board to take out on smaller days/when the white water is a bit easier - however if I were to look into a shorter board, what do you think is the next step for me?
Sorry for the very long speal but thank you in advance for your help!!