I also delayed Orgovyx but there was really no reason to. After 1 month, I had zero side effects and asked my RO for a T test to be sure it was working.
I've been on it 8 months now. I also take Abiraterone.

I've been pretty lucky with SE's I see a loss of muscle mass by my reduced maximum in the gym but no obvious body changes.

And very limited and mild hot flashes, no fatigue (not even from RT).

Like @heavyphil my sleep isn't great. Melatonin helps a little (sometimes) and I've started "mindfulness" which I was sceptical about but may be helping. If not enough, I plan to consult an onco-psychologist.

Loss of libido yes but not important for me.

Not happy about the probable loss of bone mineral density but trying to reduce the impact.

So it really depends. Everyone says it helps to be fit and active (which I am) so it could be that but as heavyphil points out, everyone is different.