The 'new job' exclusion isn't very clear about self employment but does mention you must move so that your place of work is >50 miles FURTHER than your old commute. If your work was regionally tied then you have a shot but if you're WFH then that would be questionable to me.

It's not entirely too hard to justify a partial exclusion using any of the numerous outs in IRS Publication 523.

The particular situation you speak of isn't outlined but would fall under 'other facts and circumstances' to me if you would have experienced hardship without the move based on circumstances you couldn't have reasonably foreseen. Maybe you have an inlaw with health concerns that would fit elsewhere too. Worth a call to a tax expert if you're treading lightly.

Alternatively waiting until october wouldn't be hard given it's likely 12 weeks from listing to closing in even the most ambitious timeline right now.