I can't Poppy tank (jung)

I played Poppy a lot when she got reworked, and felt like picking her up again after her newest skin. Problem is, i don't seem to be able to play her as a tank.

When i play Poppy jung, i just feel so useless when i go straight tank. I feel like i deal no damage, my ganks are weak, and i don't feel threatening. I find that weird especially since my main is Vi, and even when my first 3-4 items are straight tank item, i still dish out tons of damage and feel so useful and her gameplay is rewarding.

As for Poppy, i feel like she only starts to get relevant after building her first damage items. Without damage all i do is tickle the enemy, camps take a while to clear, and i can't trade. I tried picking a BC, or a sheen/IBG after completing my cinderhulk, but it seems like it doesn't add enough power to her kit, and not early enough.

Actualy, the most success i've had with her, was buying blue smite, and then rushing a Youmuu. The increased damage, Arpen and the active means that i can clear my camps really fast, burst enemies, position myself more easily, and trade really well. That early power spike will often allow me to snowball more, and then i'll usualy purchase a sheen/Trinity/BC, and then finish my build with straight tank items.

I play jungle in almost every games, and mostly play bruiser/tank junglers. Poppy really is the first one i can't seem to excell with as a tank.

I'm probably doing something wrong, but do you guys have any advices?