6 weeks? I very much doubt it. I may be wrong but as I understand it you are looking more like 3 to 6 months at least.
To obtain an
NVQ you need to have an assessor come out to you and assess you working through an entire job. I think it may even be two or more jobs.
Either that or go to college for a year or so. Some do
NVQ's in Tiling.
Gaz