Young love

Me 20M Gf 20F we are in a ldr and have been together for almost 3 years and have known each other more 4 years, we have met once it was nice

TLDR:
Me and my gf are growing apart but we are eager to fix this she is in a burnout, she loves me but not in love, she is confused as to what she is going to do.

We had a talk where she mentioned she loves me but not in love anymore it broke me and we’ve had talks on how to fix this she she says she’s just as eager to fix this as much as i do

Things THAT I considered was the reason, this past few months we have been very busy with school and such and i kept on asking her at least twice a week to be intimate and she rejects me ofc because she is busy and tired, i am young and stupid-did not think of it right away but the constant rejection is frustrating but as much did not really bother her with it anymore- fast forward she mentioned that sex or masturbation stuff just doesn’t appeal to her as much.

She is in a burntout and she is confused and tired. She told me that she loves me but not as much, she still sees me as her partner. She is still attracted to me but not as much. Spending time together feels like a chore to her and our everyday talks and activities feels like a chore, routine.

I am young and stupid and not sure if my explanation check out or whatnot but we are both eager to fix what we have, we are both confused and i am doing my best, she is unsure of wanting to continue the relationship because she feels guilty that she cannot give me my needs and that i’ve been giving and doing a lot of effort in our relationship and shes just not giving as much but i know she is not the expressive type of person and whatever she is giving i know it is her 100% no matter how little it may seem for others. She is falling out of love?Burnout?The spark isn’t there anymore?Any advice to fix this not really want to end it.