That is a financial decision to take with qualified advisers, but the process shape matters: the fee is paid at application, vetting follows document submission, and the gift is made only when instructed. Official descriptions of duration are not guarantees, and no exact timeline can be promised. Assume the money must stay reachable for an uncertain interval.
Keep the funds documented while they wait
Money rarely sits still. Interest accrues, accounts get consolidated, advisers move balances between institutions. Each of those movements extends the paper trail that has to be explained later, so decide deliberately whether convenience is worth the extra reconciliation.
Keep statements for the whole waiting period, not only for the month of the sale. If a transfer becomes necessary, record the reason at the time rather than reconstructing it from memory afterwards. Add one further discipline to that record-keeping: write down the reason for every movement at the time it happens, in a single running note.
Consolidations, transfers between institutions, a move into a different currency, an adviser rebalancing a portfolio — each is ordinary and each extends the explanation the file must eventually carry, and the reason is obvious in the week and unavailable a year later. One line per movement, dated, is enough. Hypothetical example: funds waiting through an extended period are moved four times for entirely ordinary reasons, and a running note of four sentences, written as each occurred, replaces what would otherwise be an attempt to reconstruct intentions from bank statements alone.