Support Challenge 1

I've been looking for the answer for quite some time now but I've had no luck, I'm trying to complete the battlefield 6 "heal teammates for health with the support" challenge and so far I've managed 1494/5000 but I still don't fully understand if this is meant to be as slow and time consuming as it is or if I'm missing a trick.

I've seen that combat medic gives revive recovery which triggers passive health regeneration so I assume this is the healing, I have also seen that the Restock Allies also resupplies and heals nearby friendly forces for 10 seconds but I've used this a good few times and it doesn't seem to push the healing up much either.

So, I ask, am I missing something, is there a more effective way of healing that'll get me through the challenge quicker, or is it just a case of get a small boost every 20 minute match until I eventually get there?