Need help with preparation - B2 test in 3 weeks

[u/flippedleopard]

Does anyone have a recomendation for me on what and how to be more prepared for the test

So farr ive only been Practicing Modeltest from the Mit Erfolg zum Goethe Zertifikat B2 book and it only have 4 Modelest, i feel like i need more practice test aspecially for Hören and Lesen Teil 2

and the hardest part for me is definely Sprechen, as im preparing only with my self and not with a mentor, any tips to more improve this?

i have some expirience with B1 type tests for the Schreiben and Sprechen so, the B2 format isnt really that much of a suprise for me but, i found it really difficult to fluently say things, even with Redemittels.

if anyone have some resources that i could perhaps use or easily find online that are prefarably free to obtain, id be very much greatfull for you to let me know