TN vs H1b on GC

[jinneebhat]

One US employer started my GC process while I was working in Canada on a PR. I got my I140 approved. He also applied my H1b on basis of I140 but it got approved for 10 months only.

 

Now I do not want to join him since I do not want to do all travel for just 10 months approval and rather wait for my canadian citizenship. The citizenship will come in another 1.5 yrs.

Can I move to TN visa after Canadian citizenship and work for that employer, so as to complete my obligation to join him?

Also, will my GC application continue?

I am software analyst with Indian nationality

 

Please advise