DIY as in "do it yourself"

From FL statute:

Title V
JUDICIAL BRANCH Chapter 39
PROCEEDINGS RELATING TO CHILDREN

39.01 Definitions.--When used in this chapter, unless the context otherwise requires:

(1) "Abandoned" means a situation in which the parent or legal custodian of a child or, in the absence of a parent or legal custodian, the caregiver responsible for the child's welfare, while being able, makes no provision for the child's support and makes no effort to communicate with the child, which situation is sufficient to evince a willful rejection of parental obligations. If the efforts of the parent or legal custodian, or caregiver primarily responsible for the child's welfare, to support and communicate with the child are, in the opinion of the court, only marginal efforts that do not evince a settled purpose to assume all parental duties, the court may declare the child to be abandoned. The term "abandoned" does not include an abandoned newborn infant as described in s. 383.50, a "child in need of services" as defined in chapter 984, or a "family in need of services" as defined in chapter 984. The incarceration of a parent, legal custodian, or caregiver responsible for a child's welfare may support a finding of abandonment.

So while he hasn't made contact physically, he has provided financial support; the whys and hows don't really enter the equation.

Please speak with an attorney - honestly, it's your best bet.

Good luck!