The 12 top-flight clubs met at Hampden on Monday to discuss the new rule book for the proposed three leagues of 12-12-18, which would split into 8-8-8-18 after 22 games.
It will take an 11-1 vote to pass the motion, which will also have to be approved by the Scottish Football League, who have yet to set a date for their vote.
Dundee United chairman and SPL board member Stephen Thompson, said: "Everything is positive and moving forward. There is a process in place and we will take it from there."
Asked if he thought reconstruction would be in place for the start of next season, he replied: "That's the plan."
St Mirren chairman Stewart Gilmour was more cautious as he left Hampden earlier in the day. He said: "We had a good discussion. There was good dialogue and difference of opinion but a long way to go.
"I don't know what will happen. The SFL clubs are still to meet and until they come back. There is a lot of tidying up to be done.
"The biggest thing is, once the SFL clubs meet, I'm sure they all have their own opinions as well so there is a long way to go.
"If you make a decision to change, it is best to happen right away but whether we get to that in time, I don't know."
- Sports & Recreation