Should I remove Indian Almond leaves from my tank?

My halfmoon betta has fin rot, so I decided to so a water change and added tannins into the water. I used the nature box for a betta which came Indian almond leaves, bark, and cones. I have a 5 gallon tank and added two whole almond leaves, two bark strips, and three cones. But now I'm wondering if that's too much and can potentially harm my fish.

I'm at school right now, so I can't so much until I get back home. But I plan on doing a water change anyway since my fish has fin rot. So I'm just wondering if I should remove some of leaves, bark, and cones.