>>Do the saints in heaven pray?<<
It sounds like you are going somewhere specific, so I will be very specific in my response. First, an important clarification: I believe that when the bible uses the word “saints” it means all believers. And wherever I see the phrase “prayers of the saints”, as in Revelation, I believe it is referring to our prayers.
The other distinction I make is that based on what I see in scripture, time may not pass in eternity as it does in our “reality”. I see it this way: Time is a river that flows in an ocean called eternity.
Some will argue that Jesus appears in Genisis 32 and wrestles with Jacob.
“And account the longsuffering of our Lord, salvation; as also our most dear brother Paul, according to the wisdom given him, hath written to you: As also in all his epistles, speaking in them of these things; in which are certain things hard to be understood, which the unlearned and unstable wrest, as they do also the other scriptures, to their own destruction.” 2 Peter 3:15-16