When the heck am I supposed to eat and take care of myself?

I'm home with my 2 month old all day. Right now his wake windows are an hour ish or depending when he shows sleepy cues. But usually an hour. 25 minutes of that is feeding (bottle, b/c I'm under supplying), diaper change, tummy time and then another 20 minutes to wind down. He also hates being put down in bassinet for naps. I either have to wear or hold him. I'm crying over this because when am I supposed to:

• go to the bathroom
• brush my teeth
• tidy up
• eat food and pump: I barely had any supply to begin with. I managed to get it up while my husband was at home but without a second pair of hands, I can't pump because I'm always holding the baby or wearing the baby. And I don't get to eat anywhere near the amount of food or nutrition I would need to produce enough breast milk anyways.

I hate feeling isolated and unable to do basic things. My supply is drying up because I don't have time for myself at all. Pumping in the evening alone isn't enough and I'm not sleeping either. I can't stand this. I'm tired of having a thousand things to do. It just feels like a marathon that never ends and I miss having breathing room to think about anything other than if my baby is gassy or constipated or if anything they do is normal.