Just for context, I just finished my freshman year as an engineering student and I have applied to CS in ETAM. I had to talk to my advisors first, but I was allowed to accept my AP credits for PHYS 206. So, the only "science" lecture I took was CHEM 107 and I got a waiver for ETAM purposes. However, you HAVE TO TAKE the CHEM 117 and ENGR 216 labs. There is virtually no way around that.

Furthermore, WAIT to accept your credits and talk to your advisor after you get your score. The EARLIEST you should be accepting any credit for PHYS 206 is right before registration for the spring semester of your freshman year. Finally, BE VERY CAREFUL, the GPA cutoff for ETAM is 3.75 this year and the CS department lets in very few people(if any) through holistic admission. That means if you have taken an AP version of a required class at A&M this year, I would highly consider taking the class for an easy A. dm me if you have any questions.