After not surfing for a while...

I took a LONG break from surfing, 5 years, I recently moved back to the coast and am trying to relearn. I do not have very much money to buy a funboard to learn on again, so I'm using what I have now. I'm 5'8" 130lbs (I'm young
) and have a 6' - 6'3" shortboard (haven't actually measured, but this is in relation to my height.)
I am having difficulties catching waves, not so much balance, but actually getting pushed by the wave. Am I too big for it? Or am I just not paddling hard enough? It's frustrating, but if I know it can be done, I'm willing to work my a** off to be able to ride it again.
Any tips, recommendations, or comments would be appreciated. Thanks for your time

I am having difficulties catching waves, not so much balance, but actually getting pushed by the wave. Am I too big for it? Or am I just not paddling hard enough? It's frustrating, but if I know it can be done, I'm willing to work my a** off to be able to ride it again.
Any tips, recommendations, or comments would be appreciated. Thanks for your time