Funding for PhD at ETH and NSERC change of location

[Nanuer]

I found a supervisor who is interested in have me as his PhD student in ETH, Zurich. However he does not have anymore funding for me. I am a Canadian and already hold an NSERC PGS at the moment. I want to switch labs to ETH. Apparently the funding from NSERC is not enough to live in Switzerland. I have two questions

1. Does anyone know what are the scholarships, fellowships, grants, that I am eligible to apply for?

2. How rigorous is the evaluation of NSERC in letting their award holders to change research location/supervisor?

Thanks!