Starting my one meal a day diet for a month

I realised that I have gained a lot of weight recently and wanted to do something about it. I have some small back issue so can’t work out a lot. Tried intermittent fasting with 16:8 and lost some 2.5 kgs with just that and cutting heavily on sugar.

I want to reduce more, so for last one week, I am only eating lunch (2 eggs, 4 rotis with ghee and one vegetable)

Internet has mixed opinions on this. Talked to one healthifyme nutritionist but their agenda was to sell me something than actual suggestions.

Want to understand from this community, if you folks have done something like this and how good/bad could it be.