think its better if you think of the priest as a man. hes not god and lightening won't strike if you dont know stuff.
catholics ( i am one) tend to be arsey. and priests tend to be fuddy duddy nutbuckets - although there are exceptions.
i think you need to come out ( so to speak ) and tell him your finding it difficult - explain that you have ultimate faith in god an Jesus but your finding the specifics to catholocism a bit hard.
i would ask him specifics about what makes a catholic - when will he know your ready - ask him if there is a written exam!!! you need to know.
there is not much different from c of e - couple of workds here and there more incence perhaps, more statues more history.
i think ultimatley you should ask yourself if you think you would feel comfy at this church if your priest is of the fuddy duddy nutbucket variety maybe there is a different church nearby - usually is you could ask to speak to that priest and suss out which is better for you and your family to continue their religeous journey.
also think its better getting two opinions anyway. as even catholics have different opinions on how things are.
may i ask why the switch
i ask only as i cant see much difference to be honest - except women priests and the gay stuff and the married stuff - is it this thats getting on your nerves. becuase ultimatley i believe that god wants us to say thank you - and your faith is far more important than your religeon. thats my humble opinon hence why i ask.