There are a lot of unknowns but let's start here.
The First Three Questions | Mark Rippetoe
Q1 is rest between sets. The article explains far better than me, but usually on Bench and the Press I can cut the rest to 2 to 3 minutes and get away with it. YMMV.
Q2. Weight jumps from last... Guessing your microloading. I'd repeat that weight next session, and consider smaller microplates. I'd look at these
2017 Microplates for Sale
but I have half pounders which allow 1 lb incr. Which was important for me after a rotator cuff tear.
Q3. Eating and Sleeping. Again, read this but it basically talks about how well you recover. As we age this is more challenging.
To be any more specific I'd probably need to know things.
Injuries?
M/F?
Weight?
how long in the program? How consistent?
Any pain?
Did you just feel tired or weak?
My answer is almost always in the Q3 section. Sleeping and eating effectively for recovery. Recovery is when you get stronger.
Hope that helps.