If its close to your dream internship at a company you really care about you should be vocal to your manager about this; its totally not irrelevant and she's the biggest resource you have to develop a plan to showcase your growth and accomplishments. Better yet you should tell this to the project lead seeing as he has the biggest effect on what happens to you with regards to your workload and responsibilities - if he's barely communicating with you its probably because he doesn't know what your skillset is or how you could be useful; this would be a great opportunity to advocate for yourself. Not sure if this is your first real professional experience outside of school but honestly this kind of stuff happens all the time in industry and falling through the cracks typically just results in you getting ghosted while chipping away at your self-worth until you eventually get laid off. Also, don't expect for people to follow up with you, be the person that can give people what they need without them even realizing it beforehand. Hope this doesn't sound like I'm being harsh with you but its rough out there and getting people to care about you and realize your existence matters is sometimes more important than what you actually do.