Final answer:
De la Vega could use various strategies to improve his relationship with Bussard; whether it's too late depends on many factors, including both parties' willingness to reconcile. Opportunities for change usually exist in conflicts.
Step-by-step explanation:
The question seems to center on a hypothetical situation involving two unnamed individuals, De la Vega and Bussard, rather than a specific historical event or figure. In order to improve his relationship with Bussard, De la Vega might draw upon numerous sources of influence, such as communication strategies, conflict resolution techniques, or even seeking external advice from counselors or professionals experienced in interpersonal relationships. Whether or not De la Vega has waited too long to effect change in the relationship is subjective and depends on the dynamics of their interaction, the willingness of both parties to reconcile, and the depth of any issues present.
Factors such as trust, communication breakdowns, or past grievances could determine the feasibility of a substantial change. Nevertheless, in most interpersonal conflicts, opportunities to initiate change, improve understanding, and rebuild relationships can often be explored, especially when both parties are open to dialogue and adjustment.