Unfortunately there is no approved oral medicine to lower Lp(a) that I am aware of. (I mean given a normal LDL.) Statins don't lower it afaik. An oral medicine named muvalaplin is being tested for it.
Outside of that, if your Lp(a) is high, then the first strategy would be to choose a lower ApoB target than you would otherwise. (Every Lp(a) particle is also an ApoB/cholesterol particle, but 6x more atherogenic. So by lowering ApoB, you are compensating for the effect of high Lp(a))
Summary of the current research/evidence is here: https://www.empirical.health/blog/lipoprotein-a-blood-test/#...
https://x.com/gregmushen/status/1917780163242385586
And another guy lowering his with Amla, lysine and vitamin C
https://my.clevelandclinic.org/health/drugs/22550-pcsk9-inhi...
You could theoretically increase SFA to target Lp(a) while still using lipid-altering drugs to target LDL.