Unschooling to Calvert

Assalamu alaykum,
so how exactly do you go from totally unschooling to Calvert school? Good question!
We started with Calvet just few days ago, so far so good. I am a bit worry that we may slip into the old habit of unschooling! Unschooling my children has been, helpful because after I had my 3rd child I did not have much time to sit and do thing and I felt very guilty, so i approached this method using it daily and really creating an environment for my kids where unschooling was THE METHOD!
Now that we opted for Calvert, I feel that i have to put down some rules and need my children to sit and do their work just like in secular school.
I like them to sit and read, write and learning with me, I also like the idea of unschooling them because i can see how effective it has been. On the way, while using unschooling my kids have learnt how to look after a baby, and all that includes (changing nappies, feeding, washing, changing clothing etc), cleaning the house, the importance of hygiene, cooking and the danger and hazards in the kitchen, how to make shopping using real money and calculating the change, how to write a shopping list, how to read road signs, recipes, how to answer at the door and at the phone (although I won't allow them yet) and lots of other useful life things.
Secular teaching will bring back memories of our old days, the very first few months we started officially to homeschool, the tears, the good, the bad, and why not the ugly!
But hamdulillah, I believe that my decision was at the right time, as I can see already few minor changes in my kids. Both are slowly adjusting to the new routine, they wake up a bit earlier, and because they understood that our schedule is tight they get less into fighting. So that's the other side of the coin, as they say.
In the months to come, many things will change insh'Allah good changes.
In the meantime our timings and activities needs to be modify. We will have to control, when we are going out and what sports we can afford to do. With Calvert the programme is very intense and the child is required to read and write everyday. Also Math play a very big role in our daily lessons.
So there you have it, unschooling to Calvert is like going from 0 to 10 without counting the numbers in the middle.