you could make a hop tea but not for a quick fix in my opinion
I don't boil my bags, I just soak them in star-sans for a minute then wring out and add the hops and yes I fix fading IPA's all the time, the strong hop flavor diminishes quick after 30 days on most beers
just for safety sake in the event the bag gets pulled under the dip tube and clogs the beer out line, you can tie some fishing line or dental floss to the bag and pull it through the lid and seal it, that way you can yank on it if it gets clogged