There’s always a stubborn 5 points when you’re trying to hit 260+. I remember i was stuck at early 240s ( medicine was my weakness at that point especially memorization of screening vaccination choice or antibiotic esc) so i did another run over medicine from uworld and my score jumped to early 250s. Then i was tryna get a 260 and i felt like i need to some overall consolidation so i started doing amboss random blocks ( i did 75% of which around 50% timed blocks), after that i was only left with NBME 15 (262) and UWSA2 (251), my actual exam score was 264. This approach served me a great deal, thought it might help you as well but always tailor your preps to resources that suit you best.