"heightened need for" is a correct and usable phrase in written English.
You can use it when you want to express an increased necessity or demand caused by a certain situation. For example, "The recent pandemic has created a heightened need for people to stay home and practice social distancing."
In reviewing what happened, the report shies away from criticizing individual measures or people, and it acknowledged the heightened need for timely intelligence because of the threat of "massive terrorist attacks involving nuclear, chemical, or biological weapons".
So, although we have a heightened need for emergency savings, there are also factors that prevent us from accumulating them.
A prolonged disbalance between demands and resources contributes to lowered vitality and heightened need for recovery, eventually resulting in burnout, sickness absence and retention problems.
During the depressive phase there is heightened need for sleep and during manic phases the person may stay awake for many nights.
The post-election rise in hate crime means there's a heightened need for protection of vulnerable communities.
Heightened need for cognitive closure can bias our choices, change our preferences, and influence our mood.
Nonetheless, in our setting, pdm flu was associated with more frequent pneumonia or severe asthma, as witnessed heightened needs for oxygen rescue therapy.
Recent developments in depression studies have heightened the need for investigating adolescent major depressive disorder (MDD).
Recent developments in heavy oil extraction have heightened the need for a promising vapor extraction process in problematic reservoirs.
This shift "heightened the need for Treasury to proactively provide sufficient information" to lawmakers and taxpayers.
