I'm a believer in protein and cycling carbs. Do some reading on it - basically, eat most of your carbs around your workout and go low carb on days you don't work out. Read the thread by Eye Dentist, I think it's in the training category - the guy is in his fifties and ripped.
The TRT may not get you to the high side of the range - I'm mid-range a week after my shot so higher right after and then tapering down to mid. It makes a world of difference and from what I read, helps your body use protein more efficiently. I was 170 before TRT and about 650 now (300-1100).
I'm batshit crazy and log every thing I eat in an app, then transfer it to a spreadsheet every morning. I don't think that's necessary, just my own psychosis.
Read a little about resting between exercises - from memory, I think 90 seconds is best for hypertrophy, less for tone, more for strength.
I also supplement - protein, creatine, chromium piccolinate, Alpha Lipoeic acid, grapeseed (AI), and whatever else I feel like polluting my body with.
Just some ideas, not gospel, and I'm far from an expert. Been on TRT for 18 months and have added some LBM and lost some fat, around 13% body fat now. But, most every body else on here is more knowledgeable than I so take it all with a grain of salt.