"I'm starting to feel so forgotten... he messaged me left week saying that he misses me and that he has forgotten me but his actions make me wonder otherwise."

Your typos make me think you have a self esteem problem rather than a problem with his behavior; you feel left out, you feel forgotten; it's not that he has left you out or forgotten you; you should have your own life taking up the majority of your thought, time, and energy.

It is not his job to make you feel better by using his thought (Have you told him you'd like a text, if possible each day? He cannot read your mind), time (he's very busy if he's working in a restaurant and may not even have/be allowed to have his phone on him), energy (he may have a 15 minute break for himself and you want to "claim" some of that? He needs to relax from the job, eat, get revived himself for his work, not spend more energy making you feel better?).