Get a PC Flight Sim with a joy stick and practice. When you can fly a simulator down to 200ft on an ILS approach, a real aeroplane will be a breeze.
IFR flying is all about instrument scan and procedure. The instrument scan tells you where the aeroplane is and what it's doing, the procedure tells you where it ought to be what it ought to be doing and the trick is to keep the two in step. This requires planning ahead, so if you are instrument flying and have nothing to do, then you've missed something!
I had an IMCR for some years and used it in anger on a regular basis including approaches to minima, I now have an IR and from a practical point of view there's very little difference, despite what some folk will tell you. In both cases currency and practice are the important thing as the skills go rusty quite quickly if not regularly polished.