Oh, yes, I've done this too. If the scale is down, I'm proud of myself so it won't hurt me to cheat...so I guess I kinda look at it as my reward and I know food shouldn't be a reward. If the scale is up, it makes me sad and I think, oh well, I've gained anyway why not eat what I want just this one time.
I've never tried not weighing for 6 weeks, but the last time I found myself getting in the pattern of eating after a good weigh-in, I decided to stop weighing myself every week and start weighing myself every 3 weeks. The first 3 weeks (ish---I went a couple days over til after TOM was gone), I saw a 15 lb loss! What a rush! I loved seeing that big of a jump! So I tried it again and this time I was only down 3 lbs (partly water weight from PMS) which pissed me off cause I'd worked hard. Now I'm weighing every day for a little while, just to determine what kind of cycle my body is on and how much I gain/lose throughout different times of the month.
Anyways, I'd suggest giving it a try. You can always reward yourself (without food!) along the way for staying on plan or exercising for a whole week or whatever.
Good luck! Keep us posted!