The phrase "avoid extending" is correct and usable in written English.
It can be used when advising someone to refrain from prolonging or increasing something, such as a deadline or a discussion.
Example: "To keep the meeting efficient, we should avoid extending the time unnecessarily."
Alternatives: "refrain from prolonging" or "steer clear of extending".
It seemed that Dad had taken note of my Venetian obsession, and figured out how to use it to avoid extending an invitation home.
Pittsburgh 72-677) peated at 16 games over.500 this season but now needs to go 9-14 to avoid extending its North American major professional sports record of consecutive losing seasons to 20.
Thereby, governance through discourses has enabled the government to avoid extending full protection to all refugee populations on Turkey's territory, and bolstered its role as a host to Sunnite Syrians.
This is seen largely as a way for the group to avoid extending benefits to the same-sex spouses of employees.
U.S. officials, who have said there is already conclusive proof of Syrian government culpability, sought to avoid extending the investigation as a delaying tactic.
Its own audits documented violations of child-labor laws, it has been sued for sex discrimination and it does all it can to avoid extending health insurance to its employees.
"That feeds into a cycle of more avoidance of activity and more deconditioning". When you have a sore back, avoid extended bed rest.
Position the materials in hoods and BSC's as close as possible to avoid extended reaching.
Sun damage on my cheeks and forehead has resulted in dark patches and freckles, so I always avoid extended periods in the sun without an SPF30+ facial sunscreen.
In this work, two robust closed-loop controllers for blood glucose regulation are developed to prevent the life-threatening hypoglycemia, as well as to avoid extended hyperglycemia.
British Columbia's Workman's Compensation Board, which is not covered by the health law, buys time in a hospital operating theatre to get injured workers early treatment and so avoid extended disability payments.
