I have a trained handwritten character recognition model, is there an OCR I can feed it to?

Sorry if my question is misleading. I have built and trained a model which can determine what character is the input image (the image is a handwritten letter). I’d like to do not only 1 character, but let’s say a word or a text. Do I have to write my own code which segments the input image of a text/word into characters? If so where should I begin? Or is there a working segmenting model which I could just feed my trained model into then it would do the work?

Oh and the trained model consists of old latin handwritten characters.

I’m really new to this topic so any help would be appreciated! Thank you!