Warning: some of these are famous so you may have already read them. :D These are generally very drama-free and super relaxing to read (imo) + mostly very cute so give them a try!
Homura-sensei is Probably Unpopular (teacher-student manga but it's
wholesome and not at all icky for once)
Bimyou ni Yasashii Ijimekko (aka Subtly Gentle Bully; basically wholesome friendship feels)
My Tiny Senpai from Work
Spy x Family (family feels + comedy; give this a try if you haven't yet!!!)
Nan Hao and Shang Feng (this is just straight up comedy lol)
Ichimura-kun Wants to be Relied On
The Story of an Engaged Couple That Doesn't Get Along (pfft they get along fine)
Toorigakari ni One Point Advice shite Iku Type no Yankee
Tanaka-kun wa Itsumo Kedaruge
Bijutsubu Girl
Ice Guy and the Cool Female Colleague
and, of course, the manga versions from two of my recommended animes, Love Lab and GSNK. :D
+ while I'm at it, here are some links to some wholesome wholesome oneshot novels from NU.
The Cat and the Dragon
There Is an Angel in That Church
Wishing Happiness unto an Idiot Sister
It’s Because You Said There Would Be Candy!!
His Majesty Wants to Read the New Release! (lol this isn't a oneshot but it's a very cute and funny novel so recommend)
hope these help you wind down your days!