The grocer has announced that as of Friday, only one adult per household will be allowed in the shop.
At the entrance a member of staff will ask other adults to wait outside, while children are allowed if they cannot stay at home.
As stock levels improve, limits will be lifted from Sunday, though they will remain on the “most popular” items such as UHT milk, pasta and tinned tomatoes.
Limits on Easter eggs have already been removed.
All manned checkouts will have screen installed by next week to protect employees.
The firm added it has so far offered priority booking for online delivery slots to more than 450,000 elderly or vulnerable customers.
As capacity keeps being added, next week’s target is to reach 600,000 home delivery as well as click and collect slots.
Shares rose 2% to 209.62p on Friday afternoon.