@jaylonmm
To file HOH, you must meet both of these criteria
1) you must be paying more than 50% of the expenses to run the household you are living in
2) you must have a 'qualifying child' - and the most critical requirement is that they live with you 183 or more days of the year.
Further, the paren that the child lives with for at least 183 of the year has the right to claim the child. You state the child is living with you ~100 days of the year. WHo is the child living with the other ~265 days of the year?
Lastly, any tax return that lists dependents must contain the valid social security number of the child - IRS rule.
