I'm honestly jealous of you. I'm fucking garbage, hardstuck at this shit elo. But you... You can very easily improve as a player and climb with this One Simple Trick. But you won't do that. You're probably going to downvote and get first-blooded next game too. By all means, go ahead. I'm just putting this out there.
Eh, this might be fine for the 2:30 mark, but I have had games where the jungler ganks 2:30, I live. Ganks 3:30 -> blow ghost or flash, ganks 4:30 -> forced out of lane/killed, all via separate routs so a single ward isn't fixing shit. And then you just look over at your jungler afk farming 0/0/0. But to all those saying "Lol just play safe dude," its not even about the kills. I might not give up any kills to ganks, but because my opponent has jg pressure and I don't, I am having to give up farm, exp, etc, meaning my opponent is getting a free lead from a little wasted time by the enemy jg. And you best pray that this small lead isn't on a late game scaling nightmare like GP, Vlad who now get to poke me and farm for free since I have to be prepared to 1v2 if I want to trade back.
As a top main I've been forced to climb to plat without ganks in prob 80+% of my games. I have to practically 1v2 (sometimes 1v3) the whole laning phase and still snowball my lane to win since half the time the lanes my jungler is camping are all inting anyways. However, this is mostly only possible in plat 3 and below because normally my opponents will luckily.. kinda suck. In higher elo, lol good luck.
So while I am fine with the whole "watch for ganks at 2:30 thing," the rest makes it sound like top laners are just whiny trash players who can't learn simple wave management and warding, and that if we play safe all will be well. When in reality, to climb you normally have to approach the game as a 1v9 because in low elo you can't trust your adc or mid laner from randomly trying to 1v5 at the beginning of a team fight. So playing super safe and conceding any lead you have is pretty much saying "welp, lets roll the dice and hope my team mates don't suck."
Also, the one minute window your talking about is kinda BS. While that 1 minute window might exist in the eyes of junglers on my team (practically minions who can type), the opponent jungler always seems to find time for me when I am snowballing, forcing me to 1v2/3 for a double kill and then mute my jungler when they say "good job" because I have to hold myself back from flaming them and telling them they aren't going to deserve the free win I am giving them.
So while I respect the 2:30 thing and also respect that there might be some pretty stupid people who play top lane who just int all day in any role, please don't act like this one piece of advice from a silver jungler suddenly fixes everything and that we will suddenly get to climb to diamond with your One Simple Trick.
Edit: And on the flip side to this you are trying to act like jungling is super difficult and "oh I envy you, I have to learn all these things, mean while my top laners get to climb with braindead gameplay." Uhhhhhhhhhhh, what?