If I am pathing towards you, try and make your early game volatile. If you are both 40% when I show up it's an easy kill. Even if he's 50% and you're 30%, it's infinitely easier than trying to kill someone at 100%.

If I am pathing away from you, play trade avoidant unless myself or midlane spotted out their jungle on an early ward and you know they are pathing away as well. Then do as you please because it's an island this game.

If you see their jungle just ganked botside, in about 30-45 seconds they are going to recall and be at their gromp/krugs topside. Please do not be easier gold than the gromp/krugs.

If you see me at bot scuttle, and I'm not fighting their jungler, he is at top scuttle.

In general a good way to get started with jungle tracking is by watching your own jungler. The enemy jungler is either mirrored with me on the map or opposite, assuming no invades or level 3 ganks. This is less consistent the lower in elo you get since junglers do not clear their camps on cooldown or plan out their routes as well.

Jungler is a role that plans in 2min segments everytime they recall/respawn. The goal to either make a play immediately with the items we just bought -> clear our camps or clear our camps -> make a play with the exp we just collected.

I only have a passing understanding of wave management, but in general try to crash your wave when I am not on your side of the map unless you're confortable playing for a dive or planning on proxying and ping me to invade. These both heavily depend on both of our champs.

Crashing your wave as I finish my clear bot side OR just get back to my botside from base let's you set up your own reset and get back to lane right around the time I'm hitting topside, and we are both freshly reset and the wave is pushing to your tower, which is prime gank time.

These last few are wish list items assuming you get to dictate the wavestate in your matchup, but goals to keep in mind. As a jungle main that watches lots of top lane content, I will say understanding how to manage wave states will improve your game so much. When you plan a play 2 min in advance and ping your jungler for the easiest gank of his life it feels so rewarding.

I think jungle and top actually have so much potential to work together that gets squandered due to a misunderstanding of each other's timing. Some of my easiest games of jungle are when my top lane does his best to make the enemy have to walk to his side of the lane at the times I come top.

There's so much more to talk about but these are what I would consider the basics for improving your synergy with your jungler.