Hm, I thought this has been answered before but I can't find a thread. I'll try my best out my memories so this may totally be wrong:
If you have figured out how to get the invisible frog this should be easy in theory. I assume you know how to get on the top of the mountain where the flat crab is running around. The important part is to get the crab down by stamping. You can then use it as transporter for the frogs and the berries. After you have brought down the crab use it to bring a berry to the right where Toki Tori is standing in your picture. Berry first is recommanded since they don't jump down the ledges. After that you just need bring a frog over the same way although is is trickier because it can sit calmly on his place. I don't remember if you have to bring the frog from the top of the mountain or if you can guide it through the dark cave. Well, this should be the solution in theory. Like said execution is difficulter because of the moving. Just try it out if you haven't done so far.

Yeah! That was the integral part I was missing. Forgot that I could knock the crab down, allowing me to get to the end. Did it anyway! Doesn't feel like I'll ever get every collectible but I'm doing to try my best!