Is your ACAD house 2D or 3D?
That makes a huge difference to the work that was already done in ACAD to the work that you need to do with Revit. I don't think anyone here would do a house architectural design in 3D ACAD and then import it to Revit and then do it in Revit- we might get a CAD file from another professional and then use that as the base template, especially for the specifiers of steel and electrical etc. or where its been exported from another software into .dwg
Essentially what I am saying is that when I came from ACAD to Revit one reason is that Revit is way better for architectural design and making changes etc. - ACAD is very accurate and precise and is just a line vector machine (so your ACAD model might have awesome detail or very little detail) and great for getting survey documents and importing into Revit where you need mm perfect 2D work.
However, the exercise you are embarking on I would not think is normal practice. (unless you are an intern maybe and you are tasked with updating all the old 3DCAD files into a Revit model)
Your lecturer is likely setting you a learning process by seeing the differences etc. which is fine. (this is assuming a 3D model in ACAD)
its definitely normal to learn to do floor plans in ACAD and then put them into Revit. but its just a learning exercise if you do architectural designs from scratch.
Generally from my experience you will find 2D floor plans from ACAD easy to import and then start your Revit layout over the top of that.
I will often take a complex and tight ACAD process from survey and do a CAD envelope and then import that. then you start with the Revit building design as you know where the extend of the building will be.
First lesson is that Revit and ACAD are different and you actually can use ACAD imports as templates to place your walls and components in the required places. (this is only if you have to as any building designer / drafter / architect who works with Revit will start with Revit). Even if the ACAD file is totally populated with every possible detail you are only using it as a template guide as an underlay and definitely using using all the Revit tools to make a Revit model.
The best thing I can say as a newer user on this forum is just accept they are different and learn the process with as much instruction as you can otherwise you will just get frustrated and think Revit is no good, when it actually is good!
