How much step prep should I have done by now

I have done around 100 questions now (all of step 2 and 3 modules) having started after I got my offer. Is this on track or should I step on the gas and how many questions should I aim to have done by June?

Have you tried a recent paper in ~exam conditions?

I did 2004 STEP 2 and got an S but I've glanced at the newer papers and they look much harder.

Id keep the last few years for testing at the end of ~feb/march/april as the syllabus / difficulty has changed a bit and see how you progress. So maybe this week do 2021 (say) step 2 and 3 and see what you get?
For the 2004 paper could you do a reasonable number of the other questions? I guess the key thing with getting an S (step 2) is making sure you dont hit a bad year and find it hard to do the (near full) 6 questions. Geometry Dash