thank you for reaching out to the Wefugees community and for sharing your question with us.
Much has been written here about the Dublin procedure, I found the following thread for you which gives detailed information https://www.wefugees.de/803403/dublin-regulation-when-does-months-deportation-limit-start.
Please note that due to the current Corona-crisis deportations are suspended presently.
I hope my answers were useful for you and I'll be very pleased if you contact me again with further questions. I'm a member of the MBEON-staff and I‘ll be glad to guide over a longer period of time. Mbeon is an online consultancy for migrants via the mbeon-app, which you can install on your smartphone for free. Download it via App Store or Google Play Store. You'll find me In the mbeon-app under my name „München, Frau Müller“ and get confidential one-to-one advice in a safe virtual room where nobody can wiretap messages. Further information: www.mbeon.de.