You can probably set the channels manually and give them the same ssid, but you'll still most likely need to turn off the wifi and re-enable to have it connect to the stronger channel. It will still likely try to latch onto the original wifi unless the client device is smart enough to roam on it's own.
If you have a newer iPhone or higher end Android, or Windows 10 laptop with compatible hardware, you might be able to use "Fast Roaming" which has 3 protocols that allow for quicker handoff of your laptop from one access point to another.
- 802.11k which provides an access point list to the laptop.
- 802.11v which provides access point signal information.
- 802.11r which negotiates the handoff and reauthenticaton.
In the end is always up to the client device to decide when to switch, but with fast roaming, it gives the gives the client an opportunity to make an informed decision for a smoother handoff. I use ubiquiti equipment for this, and my network is very seamless and smooth when roaming.
Some MESH networks will use their own logic to kick off clients based on their RSSI signal strength, and then have them auto-roam to the other access point. This is hit or miss for many systems. Some work great, some not so much. The algorithm isn't standardized like fast roaming so results will vary from system to system.
What's in common, though, is that you need to buy a wifi system, or buy hardware that's actually designed to operate together for fast roaming. Otherwise, you need to manually turn off and On your wifi, or manually swap networks. Personally, if you don't want to buy a new system, I would just keep the name separate and manually switch between networks after you move your laptop.