When he came home, it was harder controlling diabetes.
( ( When ( he ( came home ) ) ) ( , ( it ( ( ( was harder ) ( controlling diabetes ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (PRP he)) (VP (VBD came) (NP (NN home))))) (, ,) (NP (PRP it)) (VP (VBD was) (ADVP (RBR harder)) (VP (VBG controlling) (NP (NN diabetes)))) (. .)))
It became harder to control his diabetes once he was home.
( It ( ( ( became harder ) ( to ( ( control ( his diabetes ) ) ( once ( he ( was home ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD became) (ADVP (RBR harder)) (S (VP (TO to) (VP (VB control) (NP (PRP$ his) (NN diabetes)) (SBAR (IN once) (S (NP (PRP he)) (VP (VBD was) (ADVP (RB home))))))))) (. .)))