What does the timeline look like for renewals with carta/TIE renewal/flights…?

Im in BEDA and renewing for a second year and they just told us our cartas would be send out before June 12th.

However im still confused on what the timeline looks like for all this involving TIE renewal, regreso to go back home for the summer, when to buy flights…

The program ends June 12th and if you wanna go home
for the summer basically right after that… does that mean you do both the prórroga and then the regreso all in a few days after the program ends?

Im also unsure when i’m supposed to buy a flight and when i should do it given that they only get more expensive the longer i wait

Can any previous auxes give me a general timeline involving the carta, prórroga, regreso, buying flights, etc etc etc

I would appreciate it a lot 🤞🙏😅 (also im in madrid and my tie expires mid july if that is relevant)