partner is struggling

I came here to get some advice because honestly I feel really stressed and sad. My partner has been struggling with mental health issues (maybe a little before summer began) and I need advice. I understand that their goal everyday is to just make it to the next and they shouldn’t have to worry about a relationship on top of all that but I asked them if they wanted to break up when this all started and they told me no. I feel selfish because I have some bare minimum things that aren’t being met (Goodmorning and goodnight + tiny amount of affection) I try to plan hangouts or “dates” but it always seems like theyre avoiding it, the one hangout they accepted they asked to leave an hour in. They can hangout with their friends (which is usually why they decline hangouts) just fine but when it comes to me it seems so hard. I think maybe this summer we’ve seen eachother 2-3 times. Most days we only have 1-2 short 5 minute convos, I try to engage more to show them I’m there but usually I’m left on delivered for 5+ hours. I don’t know if this is true or not because this is just my hunch but I also think during the times I’m in delivered their talking to their other friends.

I just feel so selfish for wanting my old partner back but I know she isn’t atleast for awhile, but I also feel selfish because I want so much more then they can give me right now. I know I’m just overthinking but it makes me wonder if they said no to breaking up just to protect my feelings or something. I feel bad because when I was struggling they stayed with me and tried to help me out of it but I still did what I could for our relationship.

(I also feel as if I can’t talk about it to them because when I found out they were struggling they also told me that my constant issues with them was causing them more stress and they couldn’t do much because they were struggling)