I'm trying to figure out how to get 750+ on Chemistry SAT. Any suggestions?

It’s as the title says. I’m trying to take the Chem SAT in May, because June is finals month and I have research competitions on the day of the June Chem SAT. I’ve been taking practice tests, and I’m consistently in the 730-740 range. I took a Barron’s test yesterday, and got a 740 on that as well. I want to boost my score by at least another 20-30 points to balance out my 740 Bio SAT score. Any suggestions as to how I could go above a 750?

Hey, I got a 760 on Chem. I consistently scored 700s while using Barrons. I think really understanding the concepts and looking at YouTube videos to really solidify your knowledge is the best way to study. I realize that it is past May, but if you need any help for taking it after June, let me know!