How to switch from life science to IT

Do I need to complete any specific courses to enter in IT?

You can change. In TCS there is no dedicated team to give any decisions that require mentoring for skill gap / any advice related. RMG cannot provide instead they only focus on dress code & force push associates . Project delivery teams only focus on revenue & fulfilment. Lot of conspiracy in promotions.

Ask release and ask RMG to your choice

Leaving tc$ is the only way to achieve that.