No, the amount of monthly income will vary depending on the income distributions from the ETFs in your portfolio. Some of the ETFs in your portfolio will distribute monthly, others only quarterly or half yearly. In some months, the total income payment from your portfolio could be very low, in others it could be relatively high.
The monthly income payments you can expect from your portfolio are shown in your InvestEngine dashboard. The “Projections” screen for your portfolio shows expected payments for the next 12 months.