I'm not entirely sure as the name seems rather unique. It could potentially be a very personal or region - specific novel. Maybe it's about a character who is seen as essential to someone's every flaw, but without more context it's hard to say for certain.
I'm not familiar with the 'tu meri zaroorat hai' novel. You could try searching for it in specialized book databases, local libraries, or asking in book - related forums where enthusiasts might be aware of such a work.
The title 'meri zindagi hai tu' (You are my life) itself suggests a story centered around a very important person or relationship in the protagonist's life. This could be what makes it interesting.
I'm not very familiar with Urdu novels similar to 'meri zindagi hai tu' specifically. But you could try asking at local Urdu bookstores or in Urdu literature forums for similar works.
I'm sorry, I haven't read 'tu hi meri dua complete novel' so I can't really recommend it. You could try checking online book review platforms or asking in reading groups.