No real advice, just want to send you some massive (((hugs))) and say well well done for making it to 7 months - that is a massive achievement in itself!
Does Jessica settle any more readily for any specific feed (e.g. first thing / last thing)? If so, maybe you could just drop to one BF a day (you need to keep it consistent i.e. every day or pump, otherwise your supply will definitely diminish too much) and maybe use a sippy cup for expressed breast milk or formula the rest of the time?
I know friends who did extended BF (right through to 2 - 3 years old) and who went through some really rough patches, but their LOs always came back to them for snuggled BF, even after a few days of almost virtual nursing strikes.... so I guess persistance does pay off to some extent. Also, if you think you might want to keep going, then (I am sure you will know this), limit bottle feeding strictly, as otherwise your LO might just prefer to switch to the bottle full time (easier to drink from).
Take care xx
PS Jessica is absolutely adorable!