Here's a tutorial on how to split text and insert text in the middle, or just split text in general that's the big part of this tutorial. This was requested by @Storyofangels so this chapter is dedicated to her!
Program Used: Photoshop CC 2017
1) Open up whatever graphic you want to do this on, I used a blank background just for the purpose of this tutorial
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2) Type out the text you want to split
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3) Click on the pen tool and mark where you want to cut it. I did mine a little tilted vertically but you can do it straight across.
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4) Right click on the box you made around the word and click make selection. Then right click on the text layer and click rasterize layer.
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5) You can then move the top layer freely wherever you want it.
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6) Then if you want you can add another text layer and size it however you like it and put it in the middle of the split text.
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That's pretty much it, it's really easy. If you have any questions just ask in the comments. Good luck guys :)