Unless all of the other 51 Republicans (Mitch is still absent) are voting yes, I predict Thune has Fetterman's vote. Since the main objection was the weaponization fund, the supposed change to the deal will persuade Fetterman he can support Blanche. This gives Collins room to vote no.
Susan Collins announcing she'll vote against a controversial nominee is basically the moment it becomes clear that nominee will be confirmed. It means Thune has enough votes to confirm, and thus, Collins gets a pass to look independent.