Thank you for sharing your situation with the Wefugee Community!
First of all, congratulations for your Ausbildung! People working in the field of "Sozialpflege" are really needed in Germany. Secondly, and as far as I understand your case, it is not necessary to take the asylum application back in order to continue your Ausbildung. If you are talking about "switching" to Ausbildung, are you referring to the so-called "Ausbildungsduldung"? If yes, you could still ask for that after your case finally got rejected by the BAMF (and if you are not from a so-called "safe country of origin" having entered the country after the 31.8.15). However, depending on the region in Germany you are staying, the authorities might act very differently in terms of issuing the same kind of "Duldung" to family members.
From January 2020 onwards, there will also be the option to apply for a "Beschäftigungsduldung" in case your asylum application will be rejected.
The asylum procedure sometimes takes that long, indeed, and some people unfortunately need to have a lot of patience.
I hope this helps and please get back to us if you have any more questions on that or if clarification is needed.
All the best,