Good on you!!! Your plan sounds great! Good on you for making this first MASSIVE step!!

Also just to add maybe you could try diet cordial? It is 0points on weight watchers (as is diet softdrink) but maybe that way if you feel like you really "need" (haha we all have those moments where we"need" some type of junk) you could have a diet cordial? Just a suggestion good on you though!!