My birthday is the 14th Feb... and I would love to lose 10kg... but I know I wouldn't.
As the others have said, setting that sort of goal is either dangerous or setting yourself up for failure.
In a 5 week timeframe you should be setting a total of 2-5kg weightloss goal. That is achievable. If you lose more - it's a bonus!
I think a better idea would be to aim for a more achievable weight loss for the next birthday!
When I was 37yo, I wanted to be at my goal weight for my 40th... and I was getting very close to my goal weight. But then I fell pregnant. So at 38yo I set that goal again - this time I was 25kg heavier
But then.... I fell pregnant again!
I had a baby 7 weeks ago. I'm "lucky" I didn't gain too much weight with this pregnancy - but I'm still carrying the 20kgs from the last pregnancy! So I am way way off my goal - and I've accepted that I will be overweight on my 40th.
But I'm making it a goal to be slim for my 41st. Although I'm not going to set my sights on a 20kg loss in a year - as I don't want to get disappointed if I'm not there. So... I'll be happy if I can lose 10kg... or 15kg. And I'll be estatic if I can lose 20kg.
Good luck with whatever you achieve Sarah. Just don't do anything "silly" that will inevitably make you gain the weight again... and don't be disappointed if you don't lose 10kg. Even 2kgs is 2kg's lighter - which is better then gaining!
Happy birthday for the 16th. How old will you be turning?