Crotcheting looks VERY good! How big will it end up? Nice to hear the bird info as well. As far as staying with the programme, well as you know I'm a fine one to talk but I know a lot of theory
The only thing to do is emphasise to yourself how much this is benefitting you long term, how good it is not to be carrying around the excesss weight.
When a person loses a fair bit they can lose some of their 'away from' motivation ... as in I want to stop being so fat I can't buy/wear smaller clothes, I'm so fat I can't .... (insert what ever is appropriate for you) All the things you dislike about being overweight. This might be applying to you now.
Then it is time to bump up the 'towards motivation' Think about your longer term plans, how good it will be when you get to where you had planned to be. Think about it, write about it, visualise yourself in that new body. From what you've said before you have all the resources to do this. Then move onwards
You can do it and so can I.