@mohitnow
Q. Do i understand that for the 3 days worked in the field/Miami office plus 2 months of vacation time I can get a tax refund from NY?
A. No. It's all or nothing. See the convenience of the employer discussion, above, in this thread.
"moved to Miami at the start of the pandemic" sounds like you moved for you own convenience. But, "3 days a week I work in the field or from the Miami office" sounds like you moved for the convenience of the employer.
If the work you do in FL could not have been done in NY, then you are in FL for the convenience of the employer and none of your FL work income is taxable by NY.
