In reply to Ciderslider: It sounds like you're doing something right already - nothing to HVS in a year is pretty good going.
I'm going to assume (as previous posters did) that you can't get outdoors more often. Otherwise the advice would be to do that!
If you can get to indoor wall more often - do it. In either case, putting some more thought into what you do there will be beneficial for making the most of the time you do have. Think about your weaknesses and how best to target them. Given your relative inexperience (and as Jon suggested), technique is probably the thing to be working on. Watch the more experienced climbers at the wall, maybe ask them for tips. Variety is also key: can you get to other indoor walls, even if only once a month. One of the biggest obstacles may be getting used to the way the routes are set at your local wall, thus getting good at a specific style of climbing. This is great if your project is of the same style, but not so good for your climbing in general!
A note about weights: I've read in a few places that it won't do your climbing that much good. Have you considered getting a fingerboard at home? Or even some rock rings (
http://www.metoliusclimbing.com/rock_rings.html ) to hang off the pullup bar at the gym? This may not help you much in the short term as strength probably isn't your limiting factor at the moment, but it be a good investment further down the line.
As you can see, I've made a few assumptions in the above, but the main message is specificity: target your weaknesses. Identifying them can sometimes be hard of course... Maybe it would be a good idea to ask some of the more experienced climbers at your local wall to belay you and observe. Climbers are generally friendly!