There were successful feedings in Nov., but what happened in Dec. theres not one feeding? Is this the period of time you moved? It looks like theres a month and a half between your last feeding and its previous feedings in Nov.
Than you have a successful feeding 1/19 and than no feedings as of current. almost another month and a half. I'm wondering if hes lost the will to eat. I think because of the sparatic feedings, if he doesn't eat in the next week or two it might be a trip to the vet to be safe. I would say its very important to get your snake to eat on a regular and timely basis to prevent on and off sparatic feedings.
I'm sure it will turn around. Good luck to you.