My ex boyfriend says he misses me but hasn’t responded since I told

Hi there,
I also posted this in redit but I just need as much advice as possible lol.
My ex and I were together for 4 months and he was the sweetest most loving guy I’d ever met. We weren’t together very long but had a long “talking stage”. We broke up right after his 21st birthday when his brother basically told him he looked like sh*t. My ex was working in construction 40 hours a week and traveling 4+ hours every weekend to see me (as I was in a different town for school). He was exhausted and felt like he had no time for himself which is why he ended things. He said he “couldn’t take care of himself so he didn’t feel like he could be a good boyfriend and take care of me”
I obviously tried to convince him that this wasn’t the solution and I’d work to try and see him more but he ended things. (He also has a heart condition and had just had an emergency appointment and so he was stressed about all of that)
When he broke up with me, he told me he loved me and would always love me.
It’s been about 2 months since the break up and I was worried about him.
I decided to text him (breaking our no contact since the breakup). The conversation went as follows:

Me: Hey… I just wanted to check in and see how you’re doing and make sure you got the package I sent. You don’t have to reply and can treat this like a voice mail.

Him: Do you want the honest truth?

Me: yes

Him: I cried when I opened it

Him: I cried when I read the notes

Him: I cried when I saw Cookie

(I wrote little notes in the box and since I didn’t see him for his birthday I included his gifts. Cookie was a Minecraft dog stuffy he gave me)

At this point I was crying and called my friend because I felt awful for making him cry. I had wanted him to cry when he opened it and sprayed my perfume all over his hoodies etc. my friend said I should tell him that and be honest.

Me: Do you want me to be honest?

Him: yes

Me: I wanted you to cry.. that’s why I sprayed perfume on everything. Because I was hurt. But I wanted you to know I cared.

I then didn’t hear from him after that so the next day I texted him this

Me: I’m sorry, I shouldn’t have reached out. I just wanted you to know I care about you and I want you to be happy.

Him: And yet that’s all I want for you

Him: I’m sorry

Me: Are you happy tho? Are you doing okay?

Him: Yes and no

Him: I’ve been trying to focus on work, I’ve been late a lot less I’ve been traveling less been able to save a little bit of money

Him: But I miss you

Him: Everyday

Me: Well that’s good that you’ve been able to focus on work. I miss you too.

After that he didn’t reply and it’s been 3 days. I don’t know if I should reach out again or leave him alone. I don’t know what to say. I love this man and I want to be with him but I just want him to be okay. I also don’t really understand why he would tell me he misses me but then not talk to me.

Any advice would be greatly appreciated as I really don’t know what to do.