In the context of India's Five Year Plans, a shift in the pattern of industrialization, with lower emphasis on heavy industries and more on infrastructure begins in

The Sixth Five-Year Plan (two successive formulations 1978–83 and 1980–85) marked the beginning of a discernible shift in India’s industrialisation strategy. The Janata Plan stressed employment through small and household industries, while the Congress (I) Sixth Plan explicitly aimed at a “direct attack on poverty” by creating conditions for expanding the economy and prioritised strengthening infrastructure for both agriculture and industry and encouraging small-scale consumer goods industries [1]. Although earlier plans had placed heavy emphasis on public-sector heavy and basic industries, the Sixth Plan began to reorient policy towards infrastructure and decentralised, employment-intensive industrial activity, initiating a trend away from exclusive focus on heavy industries [2].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 15: Regional Development and Planning > Sixth Five-Year Plan (1978–83) > p. 6
2. [2] https://www.mospi.gov.in/sites/default/files/Statistical_year_book_india_chapters/ch7.pdf