I will keep an eye on mempool.space.
Yes, you can.
In addition to that link given above, you can monitor and calculate mempool size per sat/vB through this tool that I posted below. In that case, you can monitor when the mempool become low traffic and didn't congested which is most likely on weekend.
You can use these links in monitoring and calculating the mempool size.
If you're not in hurry for your transaction to be confirmed quickly, you can modify it into lower fees and wait more or less a week. Otherwise, if fees are too much from the required amount of mempool it will be rejected and return to the sender's address for at least 7-14 days, AFAIK.