My eight month old breast fed baby is slow to eat solids. I started them at five months but she still only eats one or two bites. What do I do?

Be patient. Try to set baby up to watch you/others eat at mealtimes so it sees how others enjoy the event/solids. Babies can be drawn to more mature feeding methods when they decide it looks like fun. Some cultures do not offer solids until after a year and in fact they don't need them. Breast alone is fine.
Cut down on breast. How many times a day are you breast feeding? At 8months she should be on three meals with a fourth breast feeding i f she is on the breast for more than four times a day you may want to cut down on those feelings so that she might have room for more solids.