Things that help our 8 y.o. dyslexic DD, with similar symptoms:
Enlarge font when you can (ask for this as accommodation on your IEP or 504 plan)
Use and index card or lucite "highlighter bar" to help with tracking when reading (the latter can be found in the reading glasses section of CVS)
Do exercises at home to address the specific areas of visual processing that are weaknesses for your child. Get the book Developing Ocular Motor and Visual Perceptual Skills, by Kenneth Lane. We've also found the worksheets from the website Visual Learning For Life to be helpful. There are also lots of vision therapy exercise videos on YouTube.
Get a workbook to teach your child spelling patterns and sight words. We use the Wilson Just Words program, but be aware that it will require planning lessons on your part. Or, hire an O-G tutor (when we used a tutor, we went through asdec.org). Also very useful, fun and easy to understand is Reading Horizons.com. DD prefers that over live tutoring
Consider purchasing the Jingle Spells CD and listen to the spelling pattern songs over and over. DD is an auditory learner, so this works very well for her.
Have her read books that are slightly lower than her reading level, so that she's an empowered reader, then gradually build up.
Our DD went from reading simple Magic Tree House type books in second grade to reading Percy Jackson, the Rangers Apprentice series, etc. In third. This is all very possible if you identify the specific areas of weakness and map out a plan to address them It's time consuming (ideally do some reading/spelling practice most days each week - repetition is key), but as a PP said, the difference can be amazing. GL!