A new engine tends to use a little oil until fully bedded in. I would check the oil regularly until you have an idea of any consumption and then you may be able to check less often.
However, it is always good practice to check regularly, together with things like tyre pressures (coolant - not relevant on 3W), battery level etc.
B3808 RTA 51R '76 4/4 Ivory 2 seater
'01 Freelander TD4; '90 Defender 90 SW