Can I contribute to mega backdoor roth again if I change employers mid year?

I am starting anew job in two weeks.

For this year I have already contributed 20500 to 401k and 40500 to Mega backdoor Roth.

Looks like there is a federal limit of 61000 per year. So, I thought I was done for the year.

But my friend advised I should take advantage of my situation and contribute additional 61000 to mega back door roth at my new employer. Is that possible?