It's natural to feel a little concerned or confused when someone who used to text you frequently suddenly stops reaching out. However, there are many possible reasons why someone might not text for a few days, and it's important not to jump to conclusions without more information.
Here are a few things to consider:
He may be busy: It's possible that he's dealing with work or personal issues that are taking up more of his time than usual, and he hasn't had a chance to text you. Try not to assume the worst and give him the benefit of the doubt.
He may not be feeling well: It's possible that he's dealing with an illness or feeling under the weather and isn't up to texting as much as usual.
He may be waiting for you to initiate: It's possible that he's been the one initiating conversations and wants to see if you'll reach out to him first. Try sending him a message to see if he responds.
He may have lost interest: It's possible that he's no longer interested in pursuing a relationship or friendship with you and is intentionally not texting. While this can be tough to accept, it's important to respect his decision and move on if this is the case.
Ultimately, the best way to find out what's going on is to communicate with him directly. Try sending him a message asking how he's doing and if everything is okay. This can help clear up any misunderstandings and give you a better idea of where things stand.