Q: Can I carry the thread from one word to the next?
A: Yes, if the distance is less than 2 cm/.75 in. Leave a bit of slack in the thread.
Like a busy day with lots of errands, try to map out a route for your stitching path that has as few back-tracks as possible.
about carrying thread from word to word: why do it? We have enough fiber. Ending and starting again is not hard and makes for neater work and fewer chances to catch and pull a thread while stitching elsewhere.