This article by one of my local clubs may help. It's geared toward racing, but the principles still apply.
I take heart in the opening paragraph under the subhead "Climbing", "Contrary to popular belief, climbing ability is determined much more by time spent climbing than by natural ability", as I am definitely not a "natural climber"!!
In a nutshell: get out there and climb, as much as you can, as often as you can. It will provide benefits not only in the hills, but on the flats as well. 3 months is not long (but easy to get frustrated); keep climbing and in 3 more months, 6 months, a year from now you'll wonder what all the fuss was about
Good luck!