This is not recommended and will void any product warranty.
Parts A and B are digitally weighed out for optimal results. If there is not enough Part B added to Part A, the product will not cure/harden properly.
Taking smaller quantities from each tin, even if measured correctly, may cause issues with the activation of the curing process.
The resin formula is chemically manufactured to work efficiently and effectively based on the exact amounts supplied in full tins for parts A and B.