I was active duty military up until June 2023 and then switched over to reserves within a month on my profile what do I need to put to be most accurate?

To correctly show your military status for 2023 for your Military status on 31 Dec select "Reserves" and select "I was in the military all year."   Be sure when you enter your military pay forms W2 that you select the "Active Military" item on the page "Uncommon Situations" after entering the form W2 information.