Hello lets say I have 4 addresses used on Electrum

But one is address number 1 (i.e, first one generated from this seed), another is address number 15, another is address number 100, and another is address number 2000.

I could scan for all these addresses by doing gap-limit 2000. But then synchronizing would take very long time. But in my case I know that address is 1, 15, 100, and 2000. So any way to just import those, without checking for all the other unneeded addresses 1-2000?

Thanks.