Enabling or not?

Hi,

I am the wife of a compulsive gambler, iI am with him 11 years - all of which he has been a compulsive gambler. Recently got 3 months recovery but has gone back harder than ever. He says he wants to stop but his actions dont really show it. He is hurting badly and has asked me not to give in when he asks but it can be very hard as I hate how bad the fights can get and take the easy way out. 

He has gone to a meeting recently but it isnt enough in my opinion to stay off. 

i recently read an article that really changed my perspective. I realised I am enabling him and have made this situation alot longer than it should have been. I didnt realise what I was doing was so bad and why I done these things.

I realise I have to stop giving him money and believing one last time. It has got extremely toxic and we have children so I need to be the strong one.

my question here is what is enabling? 
So i control the finances and we allocate a few hundred each for food, desiel etc. the rest goes to bills or car repairs savings (which never happens) stuff like that. 

this month he insisted he was ok to have his money in revolut (no card & gambling block on) but then proceeded to send it to someone who gave him the cash/ put a bet on for him. He was honest straight away. 

Am I enabling if I give him money from our savings for diesel? I would put it in the car & because we pool our finances & he earns more than me - it is technically his. 

also i was taking on his addiction and it took me to a depressive state. I am letting go control and here if he needs me to get better. Where does it become ignoring the problem or just detaching? Im unsure how to do this.

i have joined a support group to help also.

Thank you!