Has anyone figured out how to bypass the feedback problem in the wormhole into the past

I need to know if there is a scientist out there who has figured out how to solve the equation that lies behind the constantly growing feedback that occurs with ripping open spacetime into the past. If someone can explain a solution mathematically or otherwise, I'm willing to listen. I know this is theoretical science and I did not ask this to be insulted. Please, only qualified physicists who understand the quantum effects of time travel need apply. I keep using all kinds of polynomials but none have seemed to work! I am at my wits end and I know this sounds extremely obsessive but I need to know the solution! Please, if anyone out there knows a way around this problem, let me know. The closest thing I can think of is creating a temporal pocket around something instead of opening a wormhole but I would not even know how to begin to do that. Please, any brilliant mind out there who has at least attempted the calculations, I need your help. No sanctimonious lectures on why I should not do this, please because I am not attempting this in real life... I just need to know if it is possible. I lost my son a long time ago and if I could just solve this problem, then I can prove to myself that my son was right. Time travel into the past is theoretically probable. Please, it would mean the world to me! Thank you!

Before any progress can be made on this we have to know where the wormholes actually do go. Even if they go into the past, as some people believe then at what time do they surface? Man is so new on this earth that a wormhole would more probably go back to before that time, possibly to the Big Bang, if you subscribe to that theory, and where do they emerge?
Remember they go through space and if they are a portal to the fourth dimension ( i.e. time itself), as proposed can we safely assume that we could exist in that other plane simultaneously?
Our problem is that we are building too much theory which we cannot test. and even if we did test we may not understand the outcome.