quick question: is there a keyboard shortcut for Itsu?
Assuming you mean っ - you can double the following consonant - so you would type “rippa” and produce りっぱ
Does that help?
In addition to what @Nishi790 said, you can type an ‘x’ before the consonant to add a small っ or just ‘xtsu’
You can also omit the “s” if you like, so that’s one keystroke fewer.