How to fix a parameter in fitdist function?

I am trying to fit burr distribution to my data, but for the simplicity of my algorithm, I should assume c=2 in burr distribution. I read the 'fitdist' document entirely, and right now, I think I can't do what I am looking for by using the fitdist function, but I wanted to ask my question in mathwork first to hear from experts in this field.

This is the link for fitdist and Burr distribution:

1-mathworks.com/help/stats/fitdist.html?s_tid=doc_ta fitdist

2-https://www.mathworks.com/help/stats/prob.burrdistribution.html BurrDistribution

[dpb]

Directly, fitdist doesn't support user-defined or fixed-coefficient models, no.

Write your own MLE estimation function and use mle and then makedist to convert it to a distribution object.