My tip would be stop looking for 'extra boosts' and 'quick fixes' as was already mentioned the weight probably came on half - 1 pound at a time, slow but sure is the best way.
Are you still filling in your food diary every week? scribble before you nibble and be brutally honest, just cos you didn't write it down doesn't mean you didn't eat it.
The best way is to follow plan properly, 100%, that means measuring your milk and other healthy extras, making sure you eat enough, have your syns, drink plenty of water, avoid 'tweaks'
At 4 weeks into the plan I think its a bit early to think about success express, I think at this stage its still about learning the plan and what works/doesn't work for you, remember we're all different.
Did you do a food diary the first week? why not try to follow that again and see if that gets you a better loss if it did the first week it should do xx