Selecting tax lots at year end?

Getting Started with Alpaca
1

It’s key for my strategy to rebalance in a tax efficient way. I want to sell the largest short loss first for example. Is there a way to do this in alpaca or at year end somehow? My understanding is alpaca is fixed to FIFO but there has to be something? Thanks

2

Or is there by chance a way to make an adjusted 1099B or something? Thanks.