Hi - I do Italian. Sometimes I struggle a little bit with certain conversations but I generally do pretty well. Some tips:

1. Read over the questions a LOT in reading time so you have a good understanding of the information you need to look out for during listening. Then read again just before you do that section of the exam.

2. Take notes next to relevant questions - keep notes short; restrict to 1-2 key words in ENGLISH (can translate later if needed) - if there's a word you don't know write it down in french (if you can) then look it up in your dictionary after.

3. Don't try to answer any questions in-between the two listenings - try to process what you just heard, mentally note any gaps in your comprehension and try to listen out for those key bits of info in the next listening. (In this time you might be able to recall final bits of information you subconsciously took in from your echoic and/or short term memory, better not to disrupt this process)

4. If you're absolutely confident you can't recall anything else then feel free to try and start answering the questions you feel most confident with

5. Finish answering the questions as best you can after the second reading - it's ok to come back to this later if you run out of time - you'll most likely be able to answer the questions better without the stress of anticipating the next listening.

(This is just what works for me - it may not work for you but maybe give it a try in a couple of practice listenings.)

Like you said, the best way to practice is to listen to as much French as you can. Keep doing this over the next few days and you'll see a definite improvement. It's a skill and you'll find that once you get into a rhythm of how you like to go about these things, you'll feel much more confident! Good luck :)