I think that instead of losing weight, you could build muscles :) But it's up to you :) every step in the right direction is good so losing or building it doesn't make sense at the end.

I would suggest you to try and walk 10k steps a day. It will make your heart work a bit and help losing the weight.

Ow, and one more note.. snacking fruits is good but be careful with snacking in the evening.. fruits have a lot of sugar so you need to check which ones to eat - e.g. banana is great in the evening, apple not that much :)

Good luck with your challenge and I hope that you will see the results soon :)