This is normal, there is no manual pairing after the initial setup. When the switch goes to sleep it doesn't recognize the controller without having to reconnect it to the switch... at least that's my experience. For this reason I tend to leave it wired. It's also a great controller.
Mytrix Wireless Pro Controller For Switch/Switch Lite - Macro, Wake-Up, Headphone Jack, Turbo, Motion & Vibration - Perfect Gift For Gamer Girls & Boys
13 Review
HORI Split Pad Pro: Ergonomic Controller For Handheld Mode - Officially Licensed By Nintendo & Pokemon Company International For Pokemon Legends: Arceus (Nintendo Switch)
14 Review
PowerA Legend of Zelda Adventurer's Pouch - Nintendo 3DS/Wii GameCube - Brown
11 Review
Efficient Charging Station For Xbox One Controllers With 2 Rechargeable Batteries
19 Review
๐ฎ Limited Edition Nintendo 3DS XL Gold/Black Bundle with The Legend of Zelda: A Link Between Worlds
9 Review
๐ฎ The Legend of Zelda: Majora's Mask 3D - Unveiling the Epic Remake!
8 Review
๐ฎ Exclusive Nintendo New 3DS XL Solgaleo Lunala Black Edition: Unleash Your Gaming Power
8 Review
๐ฅ Nintendo 3DS - Fiery Red
7 Review