Gertie,
I am not able to follow 'diet plans' long, or I fail miserably. I just love food too much, so I have to be flexible in my eating or I will binge big time.
I don't know what height you are, but I am 5'3 and I shoot for 1200 calories max per day of anything I want, with meals every 2-3 hours. 5-6 times a day. Obviously they are smaller meals/ snacks, but more often. I always end up having at least one cheat day per week, so my metabolism never gets out of whack. I try to drink two large water bottles per day. I exercise occasionally, but lost most of the weight without it. I started at 194+ and I'm now at 126-127.
This works well for me. Not fast, but it's doable long term.
I hope you find what works for you.
Plateaus are no fun!
Let us know if you have any other questions