According to the search results, the ideal tog duvet for a toddler depends on the season and the temperature of their bedroom. Most sources recommend starting with a 4-tog duvet once the child reaches the age of one, and then increasing the tog rating as needed. Here are some general guidelines:

• Summer: A 4.5-tog duvet is recommended for the summer months.

• Winter: A 7-tog or 7.5-tog duvet is recommended for the winter months.

• Year-round: If the childs bedroom is exceptionally cold, a duvet with a higher tog rating may be needed. However, its generally best to keep the child sleeping with a lower tog duvet as long as possible, as this is what theyll be most comfortable with.

Its important to note that the NHS recommends that infants under 12 months should not have a pillow or duvet, and instead should be placed in a sleeping bag or have lightweight blankets. Once the child reaches the age of one, a duvet can be introduced, but its important to choose the right size duvet for the childs bed to avoid the risk of overheating.