With the United Nations summit to raise funds for Haiti’s reconstruction looming, response to the appeal for immediate humanitarian aid has slowed to a trickle, says Reuters.

The U.N. Office for the Coordination of Humanitarian Affairs quickly reached the $575-million goal of its initial “flash appeal” for relief funds to help quake survivors deal with rising violence and the impending hurricane season, but after the organization raised its goal to $1.4-billion pledges largely dried up.

Donors are set to gather in New York on Wednesday for a conference aimed at raising $3.8-billion for long-term recovery efforts in the devastated Caribbean nation. Helen Clark, head of the U.N. Development Program, said that with the “big ask for recovery” coming up, “maybe donors have held back a little.”