Betta Fish: the audacity he has to make a bubble nest in his medical tank when i’m worried for his survival

my boy made his FIRST bubble nest… in the hospital tank 😭 he may be in the ICU but he is DTF
(yes i know it's very small, this is only temporary and i wasn't allowed to get a bigger one, his normal tank is a 5.5 gallon soon to be upgraded to a 10 gallon)