Take shatavari granules or powder with milk and sugar twice a day during that phase for 2-3 cycles

Hello, less than 10 days of luteal place, indicates less progesterone hormone, which makes pregnancy hard to sustain, there are progestore creams (vaginal), or injections available to sustain pregnancy and to increase luteal phase. Have healthy diet having high fresh fruits and vegetables and green leafy vegetables, vitamin b12 supplements also help, practice daily walking which improves general condition. All the best.