Your project management skills translate well across industries. If your desire is to get into software PM because there is more money there then start applying for those roles, expand your network to people that work at companies that have those roles and maybe take people out for coffee to see if/where you may have gaps to close before they would hire you.

Another angle might be to look into software companies in the EV sector, ones that build apps based on the charging infrastructure. Pivoting into running projects for them would probably be the most straight forward path to doing PM work on software and not physical install of hardware.