Question on session flow and splitting the party

I've had the party split, or characters go off on their own. I'm ok at pausing one scene and checking on the other group to keep things flowing for everyone. It's worked well enough in the past.

However, this time a character is doing a solo hustle (usually doable) while the rest of the party sleeps. There's not going to be any action to check on.

Any suggestions on how to not make this a 1 on 1 session while the rest of the players watch?

I considered having an actual 1 on 1 session, inviting the others to watch if they wanted, but schedule doesn't permit, and it feels not right.