It’s possible you might not feel the difference immediately if the energy was already subtle.
Sapien has also mentioned that boosting items more than 3 times has the potential to really cause imbalances in your energy system long term.
I think it’s also possible your energy system might reject the energy more if the item is boosted too much for your system to handle, as it could become overwhelming for you to assimilate.
I’ve experienced this before with just one boost of tags. After boosting the tag, the morphic field became much stronger and more difficult for me to assimilate.
Even though I had always experienced noticeable effects from the tag before the boost, immediately after the boost, I stopped feeling the effects very much until I became accustomed to the stronger field. It took time for my system to assimilate the morphic field once again, and the field was more difficult to assimilate than it had been before the tag had been boosted. I imagine it could be much harder after 6 to 7 boosts.
Perhaps give it some time. Your system may still be in the process of assimilating the morphic field.
If you’re boosting a tag because you weren’t feeling the effects from it, it’s important to keep in mind that it can take some time to assimilate a morphic field into your personal energy system. Also, you might not always feel a tag as it’s working, but that does not mean it’s not working.