I think you’re right in part. I think if they have 48 votes in the Senate for this, they’ll go ahead, hoping that the remaining votes will appear.
Ditto with the House, they figure they have 205 votes and they’ll just go for this.
They don’t have any other exit strategy. The best outcome for them is that this passes. The second-best outcome is that it is voted down. The worst outcome is that it dies like Clintoncare. That would demoralize the Left.
They can’t move forward on the Bill until the House passes the Senate version, and 205 votes won’t do it.