Dropping lbs then putting on before starting LE officially ??

I am going on holidays in 5 weeks for 10 days. I will probably eat what I want and won't be strict. I plan on starting the LE diet whe n I get back for 6 weeks with the hope to ttc in August. I weigh 138 at the moment so don't have alot to loose, maybe 8 lbs.

At the moment I am running 30mins 3 times a week also not eating any junk food in order to look somewhat decent on hols. I will probably drop a few lbs before hols if I stay this way then on hols I will put those l will put this lbs back on. I will start my girl sway and LE diet once I am home. If I drop some lbs, then put them on then loose again once I sart LE diet and I putting myself in boy territory before I have eve begun my girl sway?

In that situation, it's fine to lose, gain, then lose. But don't deliberately set out to gain weight in order to lose it, that makes no sense.

Thanks atomic