@51fb1883 A couple days ago I had the flu and then the RSV shots at same time, one each arm. Other than the RSV hurting more and a bit more swelling, I was fine with 2 shots. For me having a 3rd shot same time woukd have been a bit too much. 

 @0b29c469 
Thanks for letting me know your experience.  That's what I've decided.  I'll do 2 and then wait a bit.