Alright, so far this is pretty good. I love a good isekai. My current main WIP is actually the second chapter of my "An OP Tiny MC Isekai Hero" story which I think you'd enjoy based on this. The first chapter is already uploaded if you're interested, which I think you might be be.

Now as to the actually story. Ted is definitely my favorite part and I think that's where the narrative focus should be. (I skipped the part with Jill once she was captured by the giant man because I'm only into giantesses.) I think you should break off Ted into his own story. Rebby seems very interesting and playful yet bashful which is an excellent mix. It would also be nice if instead of him losing his third boon he gets to wish to be indestructible so he can be a tiny and engage in all kinds of hijinx. I think you're also feeling a pull to him since his story is continuing. These are just my thoughts but I encourage you to focus on him and follow that path.

Oh this is a great start, and there is So much potential. 

So I say continue on! Lets see where this goes!