train strike / alternate way to get from Varenna to Rome

Hi, We are based in Varenna and planned on taking an early morning train from Varenna to Milan (Regioinale lvs Varenna 8:37 - arrives 9:40 Milan) and then the 10:00 Frecciarossa from Milan to Rome. I now see there is a good possibility for a train strike. Does anyone have any ideas for alternate transpiration from Varenna to Rome? The idea of renting a car for that journey does not sound appealing but we need to be prepared if there is a strike. Would it be smart to leave Varenna on Saturday morning June 2nd to avoid the strike? Need help! Thank you,
Sharon