Overnight three times in a week??

My aunt owns a daycare 5 minutes away where our 18 month goes full time. He also stays at her house once a week so my husband and I get a date night. We usually get overnights on a Sunday but because of the holiday it was last Monday instead of Sunday. We got one a few days later on Thursday too. I thought Thursday counted as our one time a week but my aunt offered to watch him again tonight as well (Sunday) and my husband is all for it 😢 I’m having such a hard time with this. I’m ok with once a week but it feels like a lot. I just feel guilty that my son will have issues or something because of all these overnights away from mommy and daddy. My aunt by the way is AMAZING with kids. She’s owns a daycare for 17 years, is a nurse and the most loving human being I know. I just don’t want my son to feel like he’s being abandoned all the time and unstable