Eligard vs. Orgovyx - which has less side effects?

Eligard (IV - every three months) or Orgovyx (daily pill) - which has less side effects? I know everyone responds differently. My dad currently is on Eligard every three months, but it really wipes him out for a couple weeks! He is considering Orgovyx, but doesn’t want to switch to something that would cause even more side effects. Also having an IV every three months is more convenient than pill every day. Appreciate any insight!!