AITAH for not making my partner's packed lunch?

I (36F) have recently been made redundant. My partner pretty much has too (40M) both within a few weeks of each other. We have two children. He's found some temporary work. Anyway, I started making him his packed lunch after we all have dinner. I obviously take up all the household chores and making dinner, kids, shopping etc as I'm home at the moment.

Our 8year old usually makes his own packed lunch. Yesterday he didn't, so I made it. I did not make my partner one. The day before yesterday I said my partner can make his own, while our 8 year old was making his. He had the 8 year old make his for him.

So yesterday when I didn't make my partner his own, a little frustrated this morning I said "You can make your own you're 40 years old..".

AITAH? Should I make his lunch? He never made mine when he was off for the weeks before I got made redundant.His argument is that yesterday I "had everything out". but I'm supposed to make his lunch even when our 8 year old makes his own.

My argument is.. make your own damn packed lunch.