Well, of course it's different for everyone. Some learn different things faster, some have more prior skills that they can adapt, some have more prior skills that interfere! (I wonder how many come from upright bikes and how many already were on recumbents before, like I was.) Different body proportions, roads, wind conditions… Oh and of course the different models might be very different to learn.
Just do as many different trainings as you can come up with and look where you need the most work. (Figure eights in fast and in tight, straight lines, zig-zags and swerving, as slow as you can, lean with or against the bike in corners, rough bumpy roads, low traction paths like sand or grass or gravel, …)
Have another look if your bike is perfectly set up for you, sleep enough especially after your rides and maybe try different tire pressures. If you have a racy model with flat seat, maybe try to shim up your shoulders and head in the beginning?