Chloe,
If you inser the line "task dft energy", the energy calculation will be run with the default convergence threshold for energy (or even looser, if you re-define them in the dft input field), e.g.
start hh
geometry
h 0. 0. 0.
h 0. 0. 1.
end
basis
* library sto-3g
end
Property ; Mulliken ; end
dft
convergence energy 1d-6
end