Air Asia to KLIA2 flights remain 4 times a week Su-Mo-We-Fr, but they've moved the flight times to late afternoon, which is a total PITA as you arrive into KL during rush hour.
I flew to KL over the weekend, no requests for vaccination certificates, insurance or for having the MySejahtera App on your phone. Similar coming back, and no landing card required. Flight both ways was completely full.