Fiddler on the Roof accordion

As of July of last year, I've been teaching myself accordion, and with my work doing a production of Fiddler on the Roof during the summer, I want to give it a shot and try out for pit orchestra if I'm at a comfortable spot before the end of April.

Are there any tips you guys have? I do know the long-short-long notes method of practicing from my flute-playing days growing up and tapping the rhythm on one hand while playing the notes on the other from taking a keyboard class at my college nearly three years ago, but I wanted to see if y'all have any further tips to guide things along.