You should have an antibody test done before deciding to get it. This way you’ll know you need it or not.
The booster is about preventing infection primarily. Some public figures got infected recently, and it shows that a 4-5 months out some peoples’ antibodies attenuate to the point of allowing infections.
Without a test it’s like flying blind, taking antibiotics for no reason. Labcorp offers a really good test, that is relatable. Your doctor can prescribe it.